{"id":24302,"date":"2020-09-25T08:00:00","date_gmt":"2020-09-25T06:00:00","guid":{"rendered":"https:\/\/nh-oring.de\/how-do-i-avoid-gap-extrusion-with-o-rings\/"},"modified":"2023-12-06T11:50:20","modified_gmt":"2023-12-06T10:50:20","slug":"how-do-i-avoid-gap-extrusion-with-o-rings","status":"publish","type":"post","link":"https:\/\/nh-oring.de\/en\/how-do-i-avoid-gap-extrusion-with-o-rings\/","title":{"rendered":"O-RING GAP EXTRUSION"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"24302\" class=\"elementor elementor-24302 elementor-1764\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4ee7d816 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4ee7d816\" 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-9870a8\" data-id=\"9870a8\" 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-da36e27 elementor-widget elementor-widget-image\" data-id=\"da36e27\" 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=\"1024\" height=\"512\" src=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/nh-dichtungsservice-spaltextrusion_02-e1616139220947-1024x512.jpg\" class=\"attachment-large size-large wp-image-23532\" alt=\"Schadensbild O-Ring Spaltextrusion\" srcset=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/nh-dichtungsservice-spaltextrusion_02-e1616139220947-1024x512.jpg 1024w, https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/nh-dichtungsservice-spaltextrusion_02-e1616139220947-300x150.jpg 300w, https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/nh-dichtungsservice-spaltextrusion_02-e1616139220947-768x384.jpg 768w, https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/nh-dichtungsservice-spaltextrusion_02-e1616139220947.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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-385e4bcc elementor-widget elementor-widget-heading\" data-id=\"385e4bcc\" 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\">How do I avoid gap extrusion with O-rings?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-64626e1 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"64626e1\" 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-4f3b6ce7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4f3b6ce7\" 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-340e9b42\" data-id=\"340e9b42\" 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-5ad45a12 elementor-widget elementor-widget-heading\" data-id=\"5ad45a12\" 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=\"#1\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#1<\/span> Gap extrusion: Danger for O-rings under pressure<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c440420 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1c440420\" 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-62a97817 elementor-widget elementor-widget-heading\" data-id=\"62a97817\" 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> The damage pattern of gap extrusion<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-48c7711b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"48c7711b\" 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-2287f829 elementor-widget elementor-widget-heading\" data-id=\"2287f829\" 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> Causes of gap extrusion<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3646af8a elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3646af8a\" 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-7733975 elementor-widget elementor-widget-heading\" data-id=\"7733975\" 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=\"#3-1\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#3.1<\/span> System pressure<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ee54c01 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"ee54c01\" 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-1830670f elementor-widget elementor-widget-heading\" data-id=\"1830670f\" 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=\"#3-2\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#3.2<\/span> Operating temperature  <\/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-6afec33e\" data-id=\"6afec33e\" 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-11d33752 elementor-widget elementor-widget-heading\" data-id=\"11d33752\" 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=\"#3-3\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#3.3<\/span> Constructive design  <\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6595f650 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6595f650\" 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-190ac355 elementor-widget elementor-widget-heading\" data-id=\"190ac355\" 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=\"#3-4\"><span style=\"background-color:#fe5050;color: #ffffff;padding: 5px\">#3.4<\/span> Material selection<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2e8d774b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"2e8d774b\" 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-34305632 elementor-widget elementor-widget-heading\" data-id=\"34305632\" 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> How to secure O-rings against gap extrusion<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-627f57fe elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"627f57fe\" 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-377c889 elementor-widget elementor-widget-heading\" data-id=\"377c889\" 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> Support for critical operating conditions<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d96260e elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"d96260e\" 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<div class=\"elementor-element elementor-element-36be693 elementor-widget elementor-widget-menu-anchor\" data-id=\"36be693\" 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-7f32db2 elementor-widget elementor-widget-spacer\" data-id=\"7f32db2\" 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-1d28c621 elementor-widget elementor-widget-heading\" data-id=\"1d28c621\" 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> Gap extrusion: Danger for O-rings under pressure<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3eb4d371 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"3eb4d371\" 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-60e3aa55 elementor-widget elementor-widget-text-editor\" data-id=\"60e3aa55\" 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>Gap extrusion is one of the most prominent types of damage to O-rings. This is mainly due to the very distinctive peeling on the elastomer.  <\/p>\n<p>They clearly demonstrate the stresses to which O-rings are exposed in tough operating conditions. Cyclically alternating phases of very high and low pressure are the main cause of the damage.  <\/p>\n<p>In hydraulics in particular, gap extrusion is therefore one of the most common causes of O-ring failure. In this article, you will learn how gap extrusion occurs and how maintenance engineers can recognize the damage. At least as important for practitioners: We provide an overview of the factors that promote gap extrusion. This results in the most effective strategy against gap extrusion.<\/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-64732898 elementor-widget elementor-widget-menu-anchor\" data-id=\"64732898\" 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-475cf43 elementor-widget elementor-widget-spacer\" data-id=\"475cf43\" 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-23302b3f elementor-widget elementor-widget-heading\" data-id=\"23302b3f\" 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> The damage pattern of gap extrusion\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-20bcc26c elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"20bcc26c\" 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-5133576c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5133576c\" 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-665c8b74\" data-id=\"665c8b74\" 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-6f1dd12e elementor-widget elementor-widget-text-editor\" data-id=\"6f1dd12e\" 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>The phenomenon of gap extrusion can also be found in technical literature under the terms extrusion, gap migration or extrusion. The principle behind it is simple: O-rings made of elastomers have almost no compressibility.  <\/p>\n<p>As the pressure increases, the O-ring takes on more and more of the contour of the installation space. As the O-ring cannot be compressed, the pressure eventually presses it into the sealing gap between the piston and cylinder.<\/p>\n<p>This process leaves very characteristic peeling marks on the sealing element. The edge of the groove shears off a thin layer from the surface of the O-ring. This usually does not happen in a circle, but mainly at the point with the largest gap.  <\/p>\n<p>If the piston and cylinder are not arranged precisely concentric to each other, the sealing gap will have different widths along the circumference. Under particularly unfavorable constellations of the sealing system, however, the O-ring can also roll around its entire circumference.<\/p>\n<p>Depending on how strong the prevailing pressure is and how the sealing system is designed in its entirety, the length of the extrusion vane can reach a multiple of the cord thickness. In the event of rapidly changing pressure conditions, parts of the extruded material can also be separated from the O-ring. These particles pose a risk to sensitive processes. They can contaminate the process media or damage other system components.<\/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-1cbab222 elementor-widget elementor-widget-image\" data-id=\"1cbab222\" 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<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1200\" height=\"600\" src=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/nh-dichtungsservice-spaltextrusion_02-e1616139220947.jpg\" class=\"attachment-full size-full wp-image-23532\" alt=\"Schadensbild O-Ring Spaltextrusion\" srcset=\"https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/nh-dichtungsservice-spaltextrusion_02-e1616139220947.jpg 1200w, https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/nh-dichtungsservice-spaltextrusion_02-e1616139220947-300x150.jpg 300w, https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/nh-dichtungsservice-spaltextrusion_02-e1616139220947-1024x512.jpg 1024w, https:\/\/nh-oring.de\/wp-content\/uploads\/2021\/02\/nh-dichtungsservice-spaltextrusion_02-e1616139220947-768x384.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\"><\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\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-110e118d elementor-widget elementor-widget-menu-anchor\" data-id=\"110e118d\" 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-4731f29 elementor-widget elementor-widget-spacer\" data-id=\"4731f29\" 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-38c3ef90 elementor-widget elementor-widget-heading\" data-id=\"38c3ef90\" 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> Causes of gap extrusion  <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1542cf5d elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1542cf5d\" 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-484bf40 elementor-widget elementor-widget-text-editor\" data-id=\"484bf40\" 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>Gap extrusion is caused by the mechanical load on the O-ring during operation. In practice, mechanical and physical influences on the sealing element are responsible for most seal failures.  <\/p>\n<p>In addition to gap extrusion, damage caused by assembly errors or inadequate groove design also plays an important role in this category. The description of the damage has already made this clear. These factors are particularly decisive for the risk of gap extrusion:<\/p>\n<ul>\n<li>System pressure<\/li>\n<li>Operating temperature<\/li>\n<li>Constructive design<\/li>\n<li>Elastomer material of the O-ring<\/li>\n<\/ul>\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-7b38bbf5 elementor-widget elementor-widget-menu-anchor\" data-id=\"7b38bbf5\" 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=\"3-1\"><\/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-7c322478 elementor-widget elementor-widget-spacer\" data-id=\"7c322478\" 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-5664351d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5664351d\" 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-2eef3f86\" data-id=\"2eef3f86\" 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-7bb4bbcf elementor-widget elementor-widget-heading\" data-id=\"7bb4bbcf\" 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\">#3.1<\/span> System pressure<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-44917e09 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"44917e09\" 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-39ffc628 elementor-widget elementor-widget-text-editor\" data-id=\"39ffc628\" 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>In gap extrusion, high and pulsating pressure provides the stress. Not only the level of the maximum pressure, but also the speed at which pressure changes occur, influences the load on the O-ring. Unmediated pressure surges cause an increased risk of gap extrusion.  <\/p>\n<p>The seal can offer little resistance to rapid deformation. Such a sudden pressure build-up occurs very frequently in hydraulic systems. Such pressure surges can occur in vehicle components as a result of sudden braking or abrupt changes in direction, for example.  <\/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<div class=\"elementor-element elementor-element-726f6b35 elementor-widget elementor-widget-menu-anchor\" data-id=\"726f6b35\" 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=\"3-2\"><\/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-720b8e7b elementor-widget elementor-widget-spacer\" data-id=\"720b8e7b\" 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-a933dfa elementor-widget elementor-widget-heading\" data-id=\"a933dfa\" 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\">#3.2<\/span> Operating temperature  <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-754e24ab elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"754e24ab\" 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-65c50e18 elementor-widget elementor-widget-text-editor\" data-id=\"65c50e18\" 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>In addition, the deformation resistance of elastomers varies greatly depending on the temperature. O-rings in hot temperatures can offer less resistance to the load than sealing elements in cooler environments.  <\/p>\n<p>If extreme temperature peaks are added to high operating pressure, gap extrusion is particularly likely. This applies at least if the designer does not include any protective measures in the design.<\/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-5fd69023 elementor-widget elementor-widget-menu-anchor\" data-id=\"5fd69023\" 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=\"3-3\"><\/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-4daf1c8c elementor-widget elementor-widget-spacer\" data-id=\"4daf1c8c\" 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-495f3621 elementor-widget elementor-widget-heading\" data-id=\"495f3621\" 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\">#3.3<\/span> Constructive design  <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-422f5325 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"422f5325\" 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-147842a3 elementor-widget elementor-widget-text-editor\" data-id=\"147842a3\" 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>Here, the interplay between the dimensions of the sealing gap, the design of the groove recesses and the dimensions of the O-ring are decisive. The coordination of these factors is the basic prerequisite for the function of static seals. For dynamic seals, which have an even higher risk of gap extrusion, this design point is crucial.  <\/p>\n<p>The risk of gap extrusion increases with the size of the sealing gap. The problem: The realization of lower tolerances for the corresponding components leads to higher production costs. The components can also change shape under the effect of pressure and temperature.  <\/p>\n<p>In unfavorable cases, the maximum sealing gap can be the entire diameter clearance. This is the case when the piston and cylinder are positioned maximally off-center in relation to each other. Then there is the design of the groove edges. A sharp edge shears off the O-ring particularly easily when it enters the gap.  <\/p>\n<p>The designer should therefore provide a radius for the grooves. O-rings that are too thin are susceptible to gap extrusion. Although the pressure presses even stronger O-rings into the sealing gap, they can withstand the material removal for longer.<\/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-12bd478 elementor-widget elementor-widget-menu-anchor\" data-id=\"12bd478\" 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=\"3-4\"><\/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-75e7a091 elementor-widget elementor-widget-spacer\" data-id=\"75e7a091\" 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-141e70fb elementor-widget elementor-widget-heading\" data-id=\"141e70fb\" 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\">#3.4<\/span> Material selection<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5a0432ee elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"5a0432ee\" 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-64d1b0b1 elementor-widget elementor-widget-text-editor\" data-id=\"64d1b0b1\" 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>The choice of a harder O-ring is the standard recommendation for applications at risk of extrusion. However, it is actually the rigidity of the seal that protects it from being pressed into the gap.  <\/p>\n<p>However, the modulus of elasticity of the O-ring under different environmental conditions is often not available. Hardness is therefore an important indicator of the extrusion strength of an O-ring material.  <\/p>\n<p>Materials whose mechanical properties decrease significantly with increasing temperature are very susceptible to high pressures. The stress caused by the process media should also be taken into account when selecting the material. Damage caused by swelling and shrinkage reduces the gasket&#8217;s resistance to gap extrusion.<\/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-39846b82 elementor-widget elementor-widget-menu-anchor\" data-id=\"39846b82\" 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-730fbfaa elementor-widget elementor-widget-spacer\" data-id=\"730fbfaa\" 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-259e7112 elementor-widget elementor-widget-heading\" data-id=\"259e7112\" 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\">#4<\/span> How to secure O-rings against gap extrusion  \n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-70551880 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"70551880\" 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-f51354f elementor-widget elementor-widget-text-editor\" data-id=\"f51354f\" 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>Knowledge of the active principle of gap extrusion and the causes is the decisive basis for successful prevention.  <\/p>\n<p>Therefore, designers who create sealing systems should be as well informed as possible about the behavior of elastomer materials under demanding operating conditions. Only then can they recognize sealing cases with a particularly high risk of gap extrusion and take countermeasures during the design phase.<\/p>\n<p>When selecting the material, O-rings with higher hardness and strength should be given preference. Resistance to the process media used is always a prerequisite. If it suits the application, O-rings made of thermoplastics are an alternative.  <\/p>\n<p>Further possibilities arise through the use of molded seals or support rings. Moulded seals can be provided with a vulcanized fabric reinforcement. This makes the seal stiffer.  <\/p>\n<p>Designers follow a similar principle with the use of support rings. They are not firmly connected to the O-ring. Instead, the fitter inserts it in front of the O-ring on the side facing away from the pressure. If the pressure is applied alternately from both sides, a support ring is used on each side.  <\/p>\n<p>The components themselves have no sealing effect, but prevent the O-ring from migrating into the gap. They are available with a wide variety of profiles in slotted or closed versions.<\/p>\n<p>This allows them to adapt to the installation situation and operating conditions. The standard material for back-up rings is PTFE, but POM or PA are also used.  <\/p>\n<p>If the options for material selection are exhausted without the desired success, the preventive measures become more complex. Other starting points are the reduction of the sealing gap and finer machining of the groove. The designer should use radii instead of chamfers.<\/p>\n<p>However, the realization of smaller tolerances and precise radii requires increased manufacturing effort. A decision must be made on a case-by-case basis as to which combination of preventive measures is most effective in preventing crevice extrusion.<\/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-3a214b elementor-widget elementor-widget-menu-anchor\" data-id=\"3a214b\" 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-e02e58e elementor-widget elementor-widget-spacer\" data-id=\"e02e58e\" 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-3379de1 elementor-widget elementor-widget-heading\" data-id=\"3379de1\" 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> Support for critical operating conditions<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26d6f2db elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"26d6f2db\" 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-1dc47213 elementor-widget elementor-widget-text-editor\" data-id=\"1dc47213\" 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>Operating conditions that are very challenging for O-rings require particularly careful design of the entire sealing system. This includes the selection of the sealing material as well as the definition of the cord thickness and the design of the groove.  <\/p>\n<p>The easiest way to alleviate the situation is, of course, to reduce the system pressure. This is the most problematic factor in gap extrusion.  <\/p>\n<p>However, as the pressure ranges are usually predetermined by other dependencies, the designer should make even better use of the remaining degrees of freedom. Various elastomer compounds with or without support ring, cord thickness and design of the installation groove offer effective approaches to limiting risk.<\/p>\n<p>Our offer: Contact our team of application experts for the sealing of highly pressurized media. With their many years of experience, they support you in the holistic optimization of the seal. Through the interaction of all components, they create permanently extrusion-proof sealing systems.  <\/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-c9bdc6d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c9bdc6d\" 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-c714eb5\" data-id=\"c714eb5\" 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-1591fe3 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"1591fe3\" 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-6793776\" data-id=\"6793776\" 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-754f500 elementor-widget elementor-widget-text-editor\" data-id=\"754f500\" 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-63562ae elementor-author-box--layout-image-above elementor-author-box--align-center elementor-widget elementor-widget-author-box\" data-id=\"63562ae\" 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-0db3102 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0db3102\" 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-5ea2d52\" data-id=\"5ea2d52\" 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-aff035f elementor-widget elementor-widget-heading\" data-id=\"aff035f\" 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-ed32c03 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"ed32c03\" 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-9738af2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9738af2\" 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-27664ab\" data-id=\"27664ab\" 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-4fb62ff 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=\"4fb62ff\" 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 loading=\"lazy\" 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>Find out in a step-by-step guide how you can successfully eliminate &#8220;gap extrusion&#8221; as a cause of damage to your O-rings.<\/p>\n","protected":false},"author":2,"featured_media":23532,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[67],"tags":[],"class_list":["post-24302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-causes-of-damage"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Avoiding gap extrusion in O-rings | Causes &amp; solutions<\/title>\n<meta name=\"description\" content=\"Find out here how you can avoid gap extrusion in O-rings? 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