{"id":24437,"date":"2021-07-25T08:00:57","date_gmt":"2021-07-25T06:00:57","guid":{"rendered":"https:\/\/nh-oring.de\/what-characterizes-a-good-o-ring-quality-control\/"},"modified":"2023-12-06T11:48:42","modified_gmt":"2023-12-06T10:48:42","slug":"what-characterizes-a-good-o-ring-quality-control","status":"publish","type":"post","link":"https:\/\/nh-oring.de\/en\/what-characterizes-a-good-o-ring-quality-control\/","title":{"rendered":"O-RING QUALITY"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"24437\" class=\"elementor elementor-24437 elementor-10413\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e2a87b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e2a87b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2e2746ac\" data-id=\"2e2746ac\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5b3db0bd elementor-widget elementor-widget-image\" data-id=\"5b3db0bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"600\" src=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/Akademie-Verformung-e1635859962421.png\" class=\"attachment-full size-full wp-image-23641\" alt=\"Rote und schwarze O-Ringe aus Gummi\" srcset=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/Akademie-Verformung-e1635859962421.png 1200w, https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/Akademie-Verformung-e1635859962421-300x150.png 300w, https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/Akademie-Verformung-e1635859962421-1024x512.png 1024w, https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/Akademie-Verformung-e1635859962421-768x384.png 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-626600dd elementor-widget elementor-widget-heading\" data-id=\"626600dd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">What does optimum quality control look like for O-rings?\n<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c1fcddf elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6c1fcddf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-55b5504d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"55b5504d\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-2f807208\" data-id=\"2f807208\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-163648ee elementor-widget elementor-widget-heading\" data-id=\"163648ee\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\"><a href=\"#1\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#1<\/span> Quality control of O-rings<\/a><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2e275b1b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"2e275b1b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-531ee643 elementor-widget elementor-widget-heading\" data-id=\"531ee643\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><a href=\"#2\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#2<\/span> Tested quality makes risks manageable<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-60ba12c1 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"60ba12c1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13b9a186 elementor-widget elementor-widget-heading\" data-id=\"13b9a186\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><a href=\"#3\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#3<\/span> Quality-determining properties of O-rings\n<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-773617ef elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"773617ef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c6d13cb elementor-widget elementor-widget-heading\" data-id=\"4c6d13cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><a href=\"#4\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#4<\/span> Relevant technical features<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-586f88b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"586f88b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54cacd41 elementor-widget elementor-widget-heading\" data-id=\"54cacd41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><a href=\"#5\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#5<\/span> Practical examples of quality problems<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-e9286e5\" data-id=\"e9286e5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3447b217 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3447b217\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-17dabc6 elementor-widget elementor-widget-heading\" data-id=\"17dabc6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><a href=\"#6\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#6<\/span> Practical quality assurance for O-rings<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c5f7f64 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1c5f7f64\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-157458a6 elementor-widget elementor-widget-heading\" data-id=\"157458a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><a href=\"#7\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#7<\/span> Laboratory tests at manufacturer and dealer\n<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-765795c4 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"765795c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-18a1db06 elementor-widget elementor-widget-heading\" data-id=\"18a1db06\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><a href=\"#8\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#8<\/span> Identity checks at the customer<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-795f0611 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"795f0611\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e3fd2f5 elementor-widget elementor-widget-heading\" data-id=\"4e3fd2f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-default\"><a href=\"#9\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#9<\/span> Conclusion: Integrated quality assurance in the value chain<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-62f7cebb elementor-widget elementor-widget-menu-anchor\" data-id=\"62f7cebb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"1\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c1c33bf elementor-widget elementor-widget-spacer\" data-id=\"2c1c33bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2bc036b7 elementor-widget elementor-widget-heading\" data-id=\"2bc036b7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#1<\/span> Quality control of O-rings\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-14aea822 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"14aea822\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a709571 elementor-widget elementor-widget-text-editor\" data-id=\"6a709571\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Users are attaching more and more importance to the careful design of O-ring seals. They check the operating conditions and select a suitable O-ring material in the correct dimensions. This results in the groove design and other design details. Trained personnel use the recommended installation tools and install the O-ring without causing damage.<\/span><\/p><p><span style=\"font-weight: 400;\">Does this mean that all the precautions for a reliable seal have been taken? Not quite, because the quality of the O-rings often remains a big unknown. Global procurement markets and the considerable influence of formulations and production processes on the performance of sealing elements create uncertainty.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">In this article, we show why end customers should definitely rely on supply chains with assured quality standards. We also outline a practical quality assurance system for sealing elements.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-456b26fd elementor-widget elementor-widget-menu-anchor\" data-id=\"456b26fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"2\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4509a7ce elementor-widget elementor-widget-spacer\" data-id=\"4509a7ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4510375f elementor-widget elementor-widget-heading\" data-id=\"4510375f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#2<\/span> Tested quality makes risks manageable<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-75713c19 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"75713c19\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-761c416b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"761c416b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-4db5d68a\" data-id=\"4db5d68a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-18f61309 elementor-widget elementor-widget-text-editor\" data-id=\"18f61309\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Low prices and few objective technical differentiators: This is the perspective from which many end users view the procurement market for sealing elements. Accordingly, price is the leading factor in purchasing decisions.<\/span><\/p><p><span style=\"font-weight: 400;\">Too little focus on quality has its risks: Because if O-rings fail during operation, this can have considerable consequences. For example, entire product batches can be contaminated, leading to their disposal. In the same way, hazardous or environmentally harmful media can escape at the sealing point.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">In addition to this almost incalculable risk, there is the possibility of consequential damage to machines and systems.<\/span><\/p><p><span style=\"font-weight: 400;\">A look at some areas of application shows that the durability of O-rings is a critical factor:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hydraulics<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pneumatics<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Shipbuilding<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Heating technology<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Petrochemistry<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Food industry<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pharmaceutical industry<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Automotive industry<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">General mechanical and plant engineering<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Reliable seals with O-rings are based on careful selection of material and dimensioning. In addition, there is the damage-free installation. However, these steps are only fully effective if the O-rings themselves meet the specified quality requirements.<\/span><\/p><p><span style=\"font-weight: 400;\">Conversely, stable product quality forms the basis for reliable and economical seals. What is needed are secure supply chains with integrated quality management. They ensure that only O-rings that are up to the task are used. But which properties are decisive for the sealing effect of an O-ring? This question will be addressed in the next section.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-48be61ab elementor-widget elementor-widget-menu-anchor\" data-id=\"48be61ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"3\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-473c6cd elementor-widget elementor-widget-spacer\" data-id=\"473c6cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d2e834f elementor-widget elementor-widget-heading\" data-id=\"4d2e834f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#3<\/span> Quality-determining properties of O-rings\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22366847 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"22366847\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7df343dc elementor-widget elementor-widget-text-editor\" data-id=\"7df343dc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The sealing effect of an O-ring results primarily from the uniform compression of the round cross-section between the sealing surfaces. Some requirements for dimensional accuracy and surface quality can already be derived from this.  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">To ensure adequate durability, the O-ring must also have a high resilience and sufficient hardness. This enables it to bridge changes in the sealing gap and withstand pressure peaks. The last category: The selected O-ring formulation should meet the expectations for resistance to ageing in air and to chemical attack by a wide range of contact media.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The task of quality assurance is to minimize the deviations of the finished O-rings from the defined target condition. Accordingly, quality control is aimed equally at detecting processing-related and recipe-related defects.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6071c387 elementor-widget elementor-widget-menu-anchor\" data-id=\"6071c387\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"4\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6079fd22 elementor-widget elementor-widget-spacer\" data-id=\"6079fd22\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-5dd8796c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5dd8796c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-47556c3b\" data-id=\"47556c3b\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c8bc5f0 elementor-widget elementor-widget-heading\" data-id=\"c8bc5f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#4<\/span> Relevant technical features\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-476cf59b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"476cf59b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d6e996b elementor-widget elementor-widget-text-editor\" data-id=\"4d6e996b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The generally accepted standards for O-rings indicate which properties are particularly important for their function. For example, DIN ISO 3601-1 specifies nominal dimensions and permissible tolerances for the inner diameter and cross-section of O-rings.  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">The 2015 edition of the DIN ISO 3601-5 standard is also considered a major success. This is because it defines internationally valid material properties for elastomer seals for the first time. The target values are specified on test specimens and on the finished product.  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">This is new, because up to now data sheet information has mainly referred to results on test panels. Due to the measurement methods, however, there may be significant deviations from the properties of finished products.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">There are also many other guidelines for specific areas of application for O-rings. DIN EN 681 refers, for example, to the use of vulcanized rubbers for sealing water supply systems. This standard is only representative of many fields of application with special requirements for the properties of O-rings. Overall, the requirements can be divided into these categories:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Selection of certain base elastomers<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Chemical resistance<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mechanical properties<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Quality tests ensure that the finished O-rings meet the applicable requirements.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-4bdbeb6 elementor-widget elementor-widget-menu-anchor\" data-id=\"4bdbeb6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"5\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3985034b elementor-widget elementor-widget-spacer\" data-id=\"3985034b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2adb364c elementor-widget elementor-widget-heading\" data-id=\"2adb364c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#5<\/span> Practical examples of quality problems<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1de388e8 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1de388e8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ce554e3 elementor-widget elementor-widget-text-editor\" data-id=\"2ce554e3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The choice of a base polymer determines the essential properties of a gasket material. This is because each rubber has its own individual profile in terms of temperature range, media compatibility and mechanical properties. Nevertheless, it should not be neglected: Depending on the formulation and processing, this profile can vary in the finished O-ring. The examples show how these factors can affect durability.<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>Degree of cross-linking:  <\/b><span style=\"font-weight: 400;\">In the case of sulphur-cured materials, fluctuations in vulcanization can be compensated for by thermal post-treatment. However, this is hardly possible with some NBR, HNBR or EPDM compounds. Fluctuations in the vulcanization process have a more direct effect on the end product. Undercrosslinking results in a lack of elastic recovery behavior of the gasket.<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\"><b>Volume shrinkage:  <\/b><span style=\"font-weight: 400;\">NBR O-rings with hardnesses around 70 Shore A can have a plasticizer content of up to 20 percent. During use, media dissolve the plasticizer out of the sealing material. The result is decreasing compression.<\/span><\/li>\n<\/ul>\n<p><b><\/b><b>Fluctuations in hardness:  <\/b><span style=\"font-weight: 400;\">Test laboratories have noticed fluctuations in the hardness of O-ring materials based on VMQ in particular. They often result from post-processing steps. The hardness influences how well the O-ring adapts to the metal sealing surfaces. O-rings that are too soft are susceptible to gap extrusion under pressure.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13c2a82c elementor-widget elementor-widget-menu-anchor\" data-id=\"13c2a82c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"6\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-70e3f749 elementor-widget elementor-widget-spacer\" data-id=\"70e3f749\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-355d067a elementor-widget elementor-widget-heading\" data-id=\"355d067a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#6<\/span> Practical quality assurance for O-rings<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54596e09 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"54596e09\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63033d22 elementor-widget elementor-widget-text-editor\" data-id=\"63033d22\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Ensuring the quality of sealing elements is a demanding task. It is divided into the usually one-off inspection of the material formulation.  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">It is particularly extensive and is the responsibility of the manufacturer. This is followed by tests during series production to ensure consistent product properties. This mainly relates to the composition and dimensional tolerances of the O-rings.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-625dc4ea elementor-widget elementor-widget-menu-anchor\" data-id=\"625dc4ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"7\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ab83414 elementor-widget elementor-widget-spacer\" data-id=\"3ab83414\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cd13771 elementor-widget elementor-widget-heading\" data-id=\"4cd13771\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#7<\/span> Laboratory tests at manufacturer and dealer\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5b29f28 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"5b29f28\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26d88843 elementor-widget elementor-widget-text-editor\" data-id=\"26d88843\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The technical possibilities for measuring O-rings and testing the material composition have developed significantly. Today, they allow much more efficient quality control. This applies to all relevant property fields:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dimensions<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Surface finish<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Long-term behavior<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Material properties<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Great progress has been made in the area of workpiece dimensions in particular. Non-contact systems avoid deformation of the O-ring and thus lead to significantly better results. Optical measurement technology is just one example. The table shows that common laboratory procedures require a wide range of high-quality equipment:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><b>Procedure\/ measuring equipment<\/b><\/p>\n<\/td>\n<td>\n<p><b>Scope<\/b><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><span style=\"font-weight: 400;\">Optical measuring machine<\/span><\/p>\n<\/td>\n<td>\n<p><span style=\"font-weight: 400;\">Diameter, cord thickness<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><span style=\"font-weight: 400;\">Digital microscope<\/span><\/p>\n<\/td>\n<td>\n<p><span style=\"font-weight: 400;\">Surface deviations<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><span style=\"font-weight: 400;\">Compressive stress relaxation test<\/span><\/p>\n<\/td>\n<td>\n<p><span style=\"font-weight: 400;\">Material behavior under the influence of temperature<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><span style=\"font-weight: 400;\">Thermogravimetric analysis<\/span><\/p>\n<\/td>\n<td>\n<p><span style=\"font-weight: 400;\">Description of the material composition<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">But the equipment alone is not enough. Reliable results are hardly possible without the necessary know-how on the part of the user. NH O-RING therefore works together with a proven specialist: The  <\/span><a href=\"https:\/\/www.o-ring-prueflabor.de\/\"><span style=\"font-weight: 400;\">O-ring testing laboratory Richter<\/span><\/a><span style=\"font-weight: 400;\">  uses state-of-the-art processes to ensure the quality of its products. Here, new materials are comprehensively qualified for series production.  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">The laboratory also carries out ongoing tests to ensure series quality. With this competent partner, NH Dichtungsservice does everything to ensure that only perfect quality reaches the end customer.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f6332e5 elementor-widget elementor-widget-menu-anchor\" data-id=\"2f6332e5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"8\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-21d7ebd8 elementor-widget elementor-widget-spacer\" data-id=\"21d7ebd8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1678316f elementor-widget elementor-widget-heading\" data-id=\"1678316f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#8<\/span> Identity checks at the customer<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d2c3ba1 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1d2c3ba1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33093167 elementor-widget elementor-widget-text-editor\" data-id=\"33093167\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The purchasers of O-rings generally carry out a simplified identity check on incoming goods. It usually consists of these components:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Density test<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hardness test<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Compression set<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The main aim here is to rule out any mix-up of materials in the upstream process chain. In addition, some companies also use tensile tests or swelling tests.  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">The mechanical tests can also reveal significant processing-related deviations between different batches. In addition, dimensional tolerances and surface quality are checked.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-731a0696 elementor-widget elementor-widget-menu-anchor\" data-id=\"731a0696\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"9\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2973a9c0 elementor-widget elementor-widget-spacer\" data-id=\"2973a9c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a6061c7 elementor-widget elementor-widget-heading\" data-id=\"a6061c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#9<\/span> Conclusion: Integrated quality assurance in the value chain<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c3a5f59 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"2c3a5f59\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d8ae577 elementor-widget elementor-widget-text-editor\" data-id=\"d8ae577\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">End users can effectively protect themselves against the risks of poor quality O-rings. Above all, they should rely on transparent supply chains and reliable partners.&nbsp;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Manufacturers and suppliers of O-rings for commercial use carry out extensive quality tests in order to maintain a high standard. This not only relieves their customers of the risk, but also saves costs. The more customers can rely on the quality of the O-rings supplied, the less effort is required for internal testing.&nbsp;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Provided you have reliable partners, a lean process in incoming goods provides sufficient security. Those who increasingly take quality criteria into account when making procurement decisions can realize lower costs overall.<\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b234bac elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b234bac\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8d7a4ad\" data-id=\"8d7a4ad\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-5497fcd elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"5497fcd\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-a43742f\" data-id=\"a43742f\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f338b00 elementor-widget elementor-widget-text-editor\" data-id=\"f338b00\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>&#8220;I am convinced that we should share our knowledge with the world. I hope I have been able to answer all your questions. If you have any further questions, please feel free to contact us at any time. We will be happy to help you.&#8221;<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2057b0e elementor-author-box--layout-image-above elementor-author-box--align-center elementor-widget elementor-widget-author-box\" data-id=\"2057b0e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"author-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-author-box\">\n\t\t\t\t\t\t\t<div  class=\"elementor-author-box__avatar\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/01\/Luke_zuschnitt-300x300.jpg\" alt=\"Picture of Luke Williams\" loading=\"lazy\">\n\t\t\t\t<\/div>\n\t\t\t\n\t\t\t<div class=\"elementor-author-box__text\">\n\t\t\t\t\t\t\t\t\t<div >\n\t\t\t\t\t\t<div class=\"elementor-author-box__name\">\n\t\t\t\t\t\t\tLuke Williams\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-author-box__bio\">\n\t\t\t\t\t\t<p>Lord of the O-rings<br \/>\nAuthor of the sealing academy<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1ef1b415 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1ef1b415\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-669e00e6\" data-id=\"669e00e6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-19b8bce5 elementor-widget elementor-widget-heading\" data-id=\"19b8bce5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What might also interest you<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5e504366 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"5e504366\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-16e9bec1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"16e9bec1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2c75be32\" data-id=\"2c75be32\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cf2803d elementor-posts--align-center elementor-grid-tablet-3 elementor-grid-3 elementor-grid-mobile-1 elementor-posts--thumbnail-top elementor-card-shadow-yes elementor-posts__hover-gradient elementor-widget elementor-widget-posts\" data-id=\"cf2803d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cards_row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:30,&quot;sizes&quot;:[]},&quot;cards_columns_tablet&quot;:&quot;3&quot;,&quot;cards_columns&quot;:&quot;3&quot;,&quot;cards_columns_mobile&quot;:&quot;1&quot;,&quot;cards_row_gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;cards_row_gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"posts.cards\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-posts-container elementor-posts elementor-posts--skin-cards elementor-grid\" role=\"list\">\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-29568 post type-post status-publish format-standard has-post-thumbnail hentry category-design category-faq-en\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/nh-oring.de\/en\/flange-gasket-8\/\" tabindex=\"-1\" target=\"_blank\"><div class=\"elementor-post__thumbnail\"><img decoding=\"async\" width=\"1226\" height=\"482\" src=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2024\/01\/Material-Test-Flanschdichtung.png\" class=\"attachment-full size-full wp-image-28967\" alt=\"Material Test Flanschdichtung\" srcset=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2024\/01\/Material-Test-Flanschdichtung.png 1226w, https:\/\/nh-oring.de\/wp-content\/uploads\/2024\/01\/Material-Test-Flanschdichtung-300x118.png 300w, https:\/\/nh-oring.de\/wp-content\/uploads\/2024\/01\/Material-Test-Flanschdichtung-1024x403.png 1024w, https:\/\/nh-oring.de\/wp-content\/uploads\/2024\/01\/Material-Test-Flanschdichtung-768x302.png 768w\" sizes=\"(max-width: 1226px) 100vw, 1226px\" \/><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__badge\">Design<\/div>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h2 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/nh-oring.de\/en\/flange-gasket-8\/\" target=&quot;_blank&quot;>\n\t\t\t\t10 questions: O-ring data sheets\t\t\t<\/a>\n\t\t<\/h2>\n\t\t\t\t<div class=\"elementor-post__excerpt\">\n\t\t\t<p>In this short article, we answer the 10 most important questions about the correct design of O-ring data sheets in a simple and understandable way.<\/p>\n\t\t<\/div>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/nh-oring.de\/en\/flange-gasket-8\/\" aria-label=\"Read more about 10 questions: O-ring data sheets\" tabindex=\"-1\" target=\"_blank\">\n\t\t\tLearn more &gt;&gt;\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\t15. March 2024\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-29429 post type-post status-publish format-standard has-post-thumbnail hentry category-design category-faq-en\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/nh-oring.de\/en\/flange-gasket-7\/\" tabindex=\"-1\" target=\"_blank\"><div class=\"elementor-post__thumbnail\"><img decoding=\"async\" width=\"1226\" height=\"482\" src=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2024\/01\/Kolbendichtung-Edelstahl.png\" class=\"attachment-full size-full wp-image-29078\" alt=\"Kolbendichtung Edelstahl\" srcset=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2024\/01\/Kolbendichtung-Edelstahl.png 1226w, https:\/\/nh-oring.de\/wp-content\/uploads\/2024\/01\/Kolbendichtung-Edelstahl-300x118.png 300w, https:\/\/nh-oring.de\/wp-content\/uploads\/2024\/01\/Kolbendichtung-Edelstahl-1024x403.png 1024w, https:\/\/nh-oring.de\/wp-content\/uploads\/2024\/01\/Kolbendichtung-Edelstahl-768x302.png 768w\" sizes=\"(max-width: 1226px) 100vw, 1226px\" \/><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__badge\">Design<\/div>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h2 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/nh-oring.de\/en\/flange-gasket-7\/\" target=&quot;_blank&quot;>\n\t\t\t\t10 questions: O-ring grooves\t\t\t<\/a>\n\t\t<\/h2>\n\t\t\t\t<div class=\"elementor-post__excerpt\">\n\t\t\t<p>In this short article, we answer the 10 most important questions about the correct design of O-ring grooves in a simple and understandable way.<\/p>\n\t\t<\/div>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/nh-oring.de\/en\/flange-gasket-7\/\" aria-label=\"Read more about 10 questions: O-ring grooves\" tabindex=\"-1\" target=\"_blank\">\n\t\t\tLearn more &gt;&gt;\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\t8. March 2024\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-29417 post type-post status-publish format-standard has-post-thumbnail hentry category-design category-faq-en\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/nh-oring.de\/en\/flange-gasket-6\/\" tabindex=\"-1\" target=\"_blank\"><div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"1220\" height=\"484\" src=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2023\/12\/Rote-und-schwarze-NBR-O-Ringe.png\" class=\"attachment-full size-full wp-image-28141\" alt=\"O-Ringe rot und schwarz\" srcset=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2023\/12\/Rote-und-schwarze-NBR-O-Ringe.png 1220w, https:\/\/nh-oring.de\/wp-content\/uploads\/2023\/12\/Rote-und-schwarze-NBR-O-Ringe-300x119.png 300w, https:\/\/nh-oring.de\/wp-content\/uploads\/2023\/12\/Rote-und-schwarze-NBR-O-Ringe-1024x406.png 1024w, https:\/\/nh-oring.de\/wp-content\/uploads\/2023\/12\/Rote-und-schwarze-NBR-O-Ringe-768x305.png 768w\" sizes=\"(max-width: 1220px) 100vw, 1220px\" \/><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__badge\">Design<\/div>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h2 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/nh-oring.de\/en\/flange-gasket-6\/\" target=&quot;_blank&quot;>\n\t\t\t\t10 questions: O-ring bearing\t\t\t<\/a>\n\t\t<\/h2>\n\t\t\t\t<div class=\"elementor-post__excerpt\">\n\t\t\t<p>In this short article, we answer the 10 most important questions about the correct storage of O-rings in a simple and understandable way.<\/p>\n\t\t<\/div>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/nh-oring.de\/en\/flange-gasket-6\/\" aria-label=\"Read more about 10 questions: O-ring bearing\" tabindex=\"-1\" target=\"_blank\">\n\t\t\tLearn more &gt;&gt;\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\t5. March 2024\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>How does professional quality control work with O-rings? Here you can find out everything you need to know about this topic.<\/p>\n","protected":false},"author":2,"featured_media":23641,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[73],"tags":[],"class_list":["post-24437","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-o-rings"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Quality control for O-rings? | Instructions for the best result<\/title>\n<meta name=\"description\" content=\"Here you can find out what optimum quality control of O-rings looks like \u2705 Dimensions \u2705 Material \u2705 Shore hardness \u2705 Feel \u2705Click here!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nh-oring.de\/en\/what-characterizes-a-good-o-ring-quality-control\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quality control for O-rings? 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