{"id":24598,"date":"2022-09-28T09:42:06","date_gmt":"2022-09-28T07:42:06","guid":{"rendered":"https:\/\/nh-oring.de\/o-ring-standard-din-3771-design-simply-explained\/"},"modified":"2025-05-07T12:17:21","modified_gmt":"2025-05-07T10:17:21","slug":"o-ring-standard-din-3771-design-simply-explained","status":"publish","type":"post","link":"https:\/\/nh-oring.de\/en\/o-ring-standard-din-3771-design-simply-explained\/","title":{"rendered":"O-RING DIN 3771"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"24598\" class=\"elementor elementor-24598 elementor-20448\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c2c3543 elementor-section-height-min-height elementor-section-boxed elementor-section-height-default elementor-section-items-middle\" data-id=\"c2c3543\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\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-33573db\" data-id=\"33573db\" 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-fec0fe1 elementor-widget elementor-widget-heading\" data-id=\"fec0fe1\" 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\"><span style=\"font-family: var( --e-global-typography-primary-font-family ), Sans-serif\">O-RING STANDARD DIN 3771 | DESIGN SIMPLY EXPLAINED<\/span><\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e15ea05 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"e15ea05\" 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-df384bb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"df384bb\" 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-df63b5c\" data-id=\"df63b5c\" 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-f3531be elementor-widget elementor-widget-spacer\" data-id=\"f3531be\" 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-02e8dc5 elementor-widget elementor-widget-heading\" data-id=\"02e8dc5\" 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\">Everything you need to know about the O-ring standard DIN 3771<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b527fc8 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"b527fc8\" 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-e288e4a elementor-widget elementor-widget-text-editor\" data-id=\"e288e4a\" 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>Without norms, there are no generally defined standards that market participants can use as a guide.  <\/p>\n<p>This applies to all areas of the industry. Standards reflect the current state of the art and ensure that the functional properties of the components or devices concerned meet the basic requirements.  <\/p>\n<p>This is also the case with O-rings, on whose reliability the operational readiness of large systems can depend. This makes it all the more important that manufacturers, dealers and users of O-rings can rely on recognized standards.<\/p>\n<p>The German DIN 3771 is a comprehensive standard for O-rings intended for general applications.  <\/p>\n<p>Although it has now been withdrawn and replaced by the international <span style=\"color: #fe5050;\"><a style=\"color: #fe5050;\" href=\"https:\/\/nh-oring.de\/en\/?p=24443\" target=\"_blank\" rel=\"noopener\">ISO 3601<\/a> <\/span>but it still influences sealing technology.<\/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-c77ad4c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c77ad4c\" 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-aec3ac5\" data-id=\"aec3ac5\" 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-7c90b82 elementor-widget elementor-widget-heading\" data-id=\"7c90b82\" 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\">REQUEST O-RINGS QUICKLY AND EASILY?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bf0ef6d elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"bf0ef6d\" 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-ce91ca1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ce91ca1\" 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-50 elementor-inner-column elementor-element elementor-element-16f29cc\" data-id=\"16f29cc\" 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-8464ecb elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"8464ecb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"far fa-check-circle\"><\/i>\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<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-1802ed1\" data-id=\"1802ed1\" 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-a993366 elementor-widget elementor-widget-text-editor\" data-id=\"a993366\" 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>Almost any dimension available<\/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-inner-section elementor-element elementor-element-68deafb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"68deafb\" 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-50 elementor-inner-column elementor-element elementor-element-d1c4602\" data-id=\"d1c4602\" 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-cdc7e0e elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"cdc7e0e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"far fa-check-circle\"><\/i>\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<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-6fac66e\" data-id=\"6fac66e\" 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-affcc81 elementor-widget elementor-widget-text-editor\" data-id=\"affcc81\" 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>Offer received in record time<\/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-inner-section elementor-element elementor-element-50671f2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"50671f2\" 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-50 elementor-inner-column elementor-element elementor-element-5f78fd4\" data-id=\"5f78fd4\" 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-291e404 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"291e404\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"far fa-check-circle\"><\/i>\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<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-fb8d731\" data-id=\"fb8d731\" 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-ad76ecf elementor-widget elementor-widget-text-editor\" data-id=\"ad76ecf\" 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>No minimum order quantities or minimum item values<\/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-inner-section elementor-element elementor-element-6b05867 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6b05867\" 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-50 elementor-inner-column elementor-element elementor-element-973994a\" data-id=\"973994a\" 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-7334891 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"7334891\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"far fa-check-circle\"><\/i>\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<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-05e0efc\" data-id=\"05e0efc\" 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-4ef0487 elementor-widget elementor-widget-text-editor\" data-id=\"4ef0487\" 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>One contact for all concerns<\/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-041e149 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"041e149\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/nh-oring.de\/en\/?page_id=23962\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-arrow-alt-circle-right\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">REQUEST O-RINGS HERE<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\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-c140efa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c140efa\" 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-0c94981\" data-id=\"0c94981\" 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-b9e1a2e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b9e1a2e\" 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-100 elementor-inner-column elementor-element elementor-element-3049290\" data-id=\"3049290\" 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-a7031e5 elementor-widget elementor-widget-heading\" data-id=\"a7031e5\" 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\">TABLE OF CONTENTS<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6457b1e elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6457b1e\" 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-f78fe66 elementor-widget elementor-widget-heading\" data-id=\"f78fe66\" 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: 4px\">#1<\/span> What is the scope of the DIN 3771 standard?<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b871105 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"b871105\" 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-7b11ae6 elementor-widget elementor-widget-heading\" data-id=\"7b11ae6\" 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: 4px\">#2<\/span> The central control areas of DIN 3771<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2eb83fd elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"2eb83fd\" 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-3cda9bf elementor-widget elementor-widget-heading\" data-id=\"3cda9bf\" 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: 4px\">#3<\/span> Structure of DIN 3771 in detail<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4b06dc6 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"4b06dc6\" 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-1a3b58d elementor-widget elementor-widget-heading\" data-id=\"1a3b58d\" 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: 4px\">#4<\/span> DIN 3771 in comparison with ISO 3601<\/a><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f7ed28e elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"f7ed28e\" 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-4f04bf1 elementor-widget elementor-widget-heading\" data-id=\"4f04bf1\" 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: 4px\">#5<\/span> DIN 3771 remains relevant<\/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\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-d095c9f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d095c9f\" 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-e4331e0\" data-id=\"e4331e0\" 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-0c28a87 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0c28a87\" 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-d0ffbc7\" data-id=\"d0ffbc7\" 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-2c34c1e elementor-widget elementor-widget-spacer\" data-id=\"2c34c1e\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"1\" 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-138f61d elementor-widget elementor-widget-heading\" data-id=\"138f61d\" 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: 3px\">#1<\/span> What is the scope of the DIN 3771 standard?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d054f3d elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"d054f3d\" 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-09f9b59 elementor-widget elementor-widget-text-editor\" data-id=\"09f9b59\" 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 title of DIN 3771 is Fluid technology, O-rings. Accordingly, the standard refers to all O-rings as sealing elements for fluid technology.<\/p><p>In practice, this is synonymous with general industrial applications for O-rings, as the widespread hydraulic and pneumatic systems are based on fluid technology.<\/p><p>In this area, the sealing elements must withstand various\u00a0<span style=\"color: #fe5050;\"><a style=\"color: #fe5050;\" href=\"https:\/\/nh-oring.de\/en\/o-ring-bestaendigkeitsliste\/\" target=\"_blank\" rel=\"noopener\">media<\/a>\u00a0<\/span>from each other and in some cases withstand high pressure.<\/p><p>In many cases, the O-rings are also subjected to friction because the components to be sealed move against each other.<\/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<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-1bdeb18 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1bdeb18\" 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-9966871\" data-id=\"9966871\" 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-837e4c0 elementor-widget elementor-widget-spacer\" data-id=\"837e4c0\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"2\" 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-0ce9b02 elementor-widget elementor-widget-heading\" data-id=\"0ce9b02\" 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: 3px\">#2<\/span> The central control areas of DIN 3771<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-50c039b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"50c039b\" 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-5dea300 elementor-widget elementor-widget-text-editor\" data-id=\"5dea300\" 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>As usual, the standard is divided into several parts, whereby the dimensions of standard-compliant O-rings are defined at the beginning.<\/p><p>This is followed by further sections on the topics of testing and marking, materials, shape and surface deviations and installation spaces.<\/p><p>DIN 3771 thus covers all the criteria required for the design of a permanently reliable O-ring seal:<\/p><ul><li><strong>Material properties:<\/strong> Elasticity, hardness and the temperature behavior of O-rings are decisive for the long-term sealing effect. Finally, the sealing element must also seal the\u00a0<span style=\"color: #fe5050;\"><a style=\"color: #fe5050;\" href=\"https:\/\/nh-oring.de\/en\/?page_id=24064\" target=\"_blank\" rel=\"noopener\">sealing gap<\/a>\u00a0<\/span>if the positioning of the sealing surfaces to each other suddenly changes during operation. These properties must remain stable over a defined temperature range so that high or low temperatures do not lead to failure.<br \/><strong style=\"color: var( --e-global-color-text );\"><br \/><\/strong><\/li><li><strong><span style=\"color: var( --e-global-color-text );\">Dimensions:<\/span><\/strong><span style=\"color: var( --e-global-color-text );\"> Tight dimensional tolerances ensure that the compression of the sealing element is within the target range. For example, a locally increased cross-section leads to greater deformation and therefore more friction. The stretchability for the\u00a0<\/span><span style=\"color: #fe5050;\"><a style=\"color: #fe5050;\" href=\"https:\/\/nh-oring.de\/en\/?p=24587\" target=\"_blank\" rel=\"noopener\">assembly<\/a>\u00a0<\/span><span style=\"color: var( --e-global-color-text );\">of a piston seal, for example, depends on the actual inside diameter of the O-ring.<br \/><br \/><\/span><\/li><li><strong>Surface finish:<\/strong> These production-related properties are distinguished from dimensional deviations, but also relate to the shape of the O-rings. For example, deviations in shape can reduce compression, burrs can increase friction or indentations can represent weak points for mechanical stress.<\/li><\/ul>\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-inner-section elementor-element elementor-element-9c18532 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9c18532\" 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-3625bde\" data-id=\"3625bde\" 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-4edd19c elementor-widget elementor-widget-spacer\" data-id=\"4edd19c\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"3\" 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-f18ff51 elementor-widget elementor-widget-heading\" data-id=\"f18ff51\" 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: 3px\">#3<\/span> Structure of DIN 3771 in detail<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ddcd12 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"2ddcd12\" 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-f8afda4 elementor-widget elementor-widget-text-editor\" data-id=\"f8afda4\" 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>DIN 3771 is divided into five sections, each of which relates to different aspects of the O-ring application.<\/p><p><strong>Part 1: Dimensions<\/strong><br \/><span style=\"color: var( --e-global-color-text );\">At the beginning, the standard lists in a\u00a0<span style=\"color: #fe5050;\"><a style=\"color: #fe5050;\" href=\"https:\/\/nh-oring.de\/en\/?p=24425\" target=\"_blank\" rel=\"noopener\">table of dimensions<\/a>\u00a0<\/span>lists all standardized O-ring dimensions. The dimensions are specified according to the ID x C\/S scheme, where ID indicates the inside diameter and C\/S the cross-sectional diameter. This measurement is often also referred to as cord strength.<\/span><\/p><p>The cord thickness starts at 1.8 mm and increases in several steps up to 7 mm. The inner diameter also ranges from 1.8 mm to 670 mm. According to the standard, a common dimension is therefore 40 x 3.55.<\/p><p>For a complete description in the context of an order, this designation is extended by the grade characteristic from Part 4 and the material from Part 3 of the standard.<\/p><p>In addition to the dimensions, the standard specifies the permissible tolerances for the dimensions. They are dimensioned in such a way that the permissible fluctuation range generally does not cause any technical losses.<\/p><p><strong>Part 2: Testing and marking<\/strong><br \/><span style=\"color: var( --e-global-color-text );\">Following the definition of standard-compliant dimensions, DIN 3771 refers to the testing and marking of O-rings. <\/span><\/p><p><span style=\"color: var( --e-global-color-text );\">The cord thickness is the primary measure for the functionality of an O-ring seal because it also determines the compression. The dimension can fluctuate mainly due to production-related influences. <\/span><\/p><p><span style=\"color: var( --e-global-color-text );\">Common manufacturing processes use two-part permanent molds in which the sealing elements are given their final shape. If the molded parts are offset to each other, this can reduce the cord thickness locally.<\/span><\/p><p>DIN 3771 specifies that the cord thickness must be measured using a non-contact method in order to be able to make statements about the dimensional deviation. The cord thickness must be recorded at several points so that local fluctuations can be recognized.<\/p><p>For the inside diameter, DIN 3771 Part 2 specifies that conical plug gauges and stepped mandrels are used.<\/p><p><strong>Part 3: Area of application<\/strong><br \/><span style=\"color: var( --e-global-color-text );\">This part of DIN 3771 characterizes various O-ring materials. They are differentiated according to their hardness and supplemented by the respective areas of application. These elastomer materials are referred to by their abbreviation according to DIN ISO 1629:<\/span><\/p><ul><li>NBR<\/li><li>FPM<\/li><li>EPDM<\/li><li>MVQ<\/li><li>ACM<\/li><\/ul><p>The application areas are specified in the form of a table that lists common media and specifies the permissible continuous temperatures for the respective media contact for each material.<\/p><p>Part 3 of DIN 3771 thus provides practical information on elastomer materials that are generally suitable for certain sealing situations.<\/p><p><strong>Part 4: Form and surface deviations<\/strong><br \/><span style=\"color: var( --e-global-color-text );\">This part specifies the permissible deviations for O-rings defined in Part 1 for two different grade characteristics. <\/span><\/p><p><span style=\"color: var( --e-global-color-text );\">While the N grade identifies O-rings with a general area of application, the S grade stands for a higher quality standard. Accordingly, it provides for lower deviations and higher surface qualities.<\/span><\/p><p>The standard distinguishes and describes these deviations on O-rings:<\/p><ul><li>Shape deviation<\/li><li>Ridge<\/li><li>Notch<\/li><li>Collection point<\/li><li>Deburring area<\/li><li>Flow lines<\/li><li>Deepening<\/li><li>Foreign body<\/li><\/ul><p>Subsequently, the standard contains tables that specify the maximum permissible dimension for each deviation. The specification is based on the cord thicknesses of 1.8 to 7 mm defined in Part 1 of the standard.<\/p><p><strong>Part 5: Calculation method<\/strong> and dimensions of the installation spaces<br \/><span style=\"color: var( --e-global-color-text );\">For sealing systems to function properly, O-rings and their installation spaces must be matched to each other. <\/span><\/p><p><span style=\"color: var( --e-global-color-text );\">Part 5 of DIN 3771 therefore provides a basis for calculating the installation grooves for O-rings. The results for the O-rings defined in Part 1 can be taken directly from the tables included. <\/span><\/p><p><span style=\"color: var( --e-global-color-text );\">However, the calculation principles can also be applied to non-standardized O-ring dimensions.<\/span><\/p><p>The regulations differentiate between axial and radial sealing systems and specify the dimensions for the height and width of the groove, for example, depending on the defined chute thicknesses. In addition, permissible expansions and compressions as well as the minimum lengths of insertion chamfers are specified.<\/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<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-f067524 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f067524\" 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-8ebd530\" data-id=\"8ebd530\" 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-3f45ba8 elementor-widget elementor-widget-spacer\" data-id=\"3f45ba8\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"4\" 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-c25dc2e elementor-widget elementor-widget-heading\" data-id=\"c25dc2e\" 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: 3px\">#4<\/span> DIN 3771 in comparison with ISO 3601<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b0fbfa elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"2b0fbfa\" 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-847cced elementor-widget elementor-widget-text-editor\" data-id=\"847cced\" 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 German standard DIN 3771 has essentially been incorporated into the now valid international standard ISO 3601. ISO 3601 also has a structure with five parts that overlap with those of DIN 3771.<\/p>\n<p>ISO 3601 defines metric O-rings according to the same dimension table as DIN 3771. In the meantime, the ISO 3601 table has been extended to include O-rings in imperial dimensions.  <\/p>\n<p>The aim behind this is to create a standard that covers the globally relevant O-ring dimensions and specifies uniform rules for installation spaces and the properties of the O-rings.<\/p>\n<p>ISO 3601 also goes beyond the German standard in the area of materials. Part 5 of the ISO standard contains material requirements for O-rings that far exceed the content of DIN 3771 Part 3.<\/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-inner-section elementor-element elementor-element-9d7adf9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9d7adf9\" 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-9edf7de\" data-id=\"9edf7de\" 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-b0edb16 elementor-widget elementor-widget-spacer\" data-id=\"b0edb16\" data-element_type=\"widget\" data-e-type=\"widget\" id=\"5\" 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-588a6ce elementor-widget elementor-widget-heading\" data-id=\"588a6ce\" 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: 3px\">#5<\/span> DIN 3771 remains relevant<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e85a6a0 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"e85a6a0\" 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-d17708c elementor-widget elementor-widget-text-editor\" data-id=\"d17708c\" 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>DIN 3771 has been officially withdrawn and replaced by ISO 3601 as the universal international O-ring standard.  <\/p>\n<p>However, DIN 3771 remains relevant in two ways: It has significantly shaped the international standard and is largely contained in the currently valid version. For example, the table of dimensions and the calculation rules for installation spaces are still valid.  <\/p>\n<p>In addition, DIN 3771 is still used in practice. Older technical documentation refers to them, as do some O-ring suppliers when providing product data.<\/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\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-1181ecb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1181ecb\" 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-5b51650\" data-id=\"5b51650\" 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-eb2b514 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"eb2b514\" 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-aa51343\" data-id=\"aa51343\" 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-0ac57e9 elementor-widget elementor-widget-text-editor\" data-id=\"0ac57e9\" 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-ce98acd elementor-author-box--layout-image-above elementor-author-box--align-center elementor-widget elementor-widget-author-box\" data-id=\"ce98acd\" 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<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>In this article, you will learn all the important information about the O-ring standard DIN 3771 and how it differs from ISO 3601.<\/p>\n","protected":false},"author":1,"featured_media":23606,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[66],"tags":[],"class_list":["post-24598","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-design"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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