{"id":24039,"date":"2021-09-16T08:14:22","date_gmt":"2021-09-16T06:14:22","guid":{"rendered":"https:\/\/nh-oring.de\/permanent-deformation-o-ring-lexicon\/"},"modified":"2025-05-07T12:30:13","modified_gmt":"2025-05-07T10:30:13","slug":"permanent-deformation-o-ring-lexicon","status":"publish","type":"page","link":"https:\/\/nh-oring.de\/en\/permanent-deformation-o-ring-lexicon\/","title":{"rendered":"Permanent deformation | O-ring lexicon"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"24039\" class=\"elementor elementor-24039 elementor-10044\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5a86013 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5a86013\" 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-top-column elementor-element elementor-element-c6d7931\" data-id=\"c6d7931\" 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-9349441 elementor-widget elementor-widget-heading\" data-id=\"9349441\" 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\">Permanent deformation<\/h1>\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-top-column elementor-element elementor-element-bfc285d elementor-hidden-mobile\" data-id=\"bfc285d\" 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-b9598f2 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"b9598f2\" 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=\"fas fa-shield-alt\"><\/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\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-894bb03 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"894bb03\" 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-cad6f45\" data-id=\"cad6f45\" 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-61dd2e4 elementor-widget elementor-widget-heading\" data-id=\"61dd2e4\" 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> What is meant by permanent deformation?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fa9974a elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"fa9974a\" 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-e45dbed elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e45dbed\" 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-09b9b33\" data-id=\"09b9b33\" 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-fd17c02 elementor-widget elementor-widget-text-editor\" data-id=\"fd17c02\" 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>An O-ring is said to be permanently deformed if the former round cross-section of the O-ring has become deformed and no longer returns to its original shape despite the absence of load.<\/p>\n<p>The ability to return to its original shape after pressing is indicated on the material data sheets by the compression set. The compression set is therefore one of the most important quality characteristics of an O-ring material.<\/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-top-section elementor-element elementor-element-d6cf7b4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d6cf7b4\" 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-cd0ec92\" data-id=\"cd0ec92\" 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-595dd68 elementor-widget elementor-widget-heading\" data-id=\"595dd68\" 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\">#2<\/span> How does permanent deformation occur in O-rings?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e4997ae elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"e4997ae\" 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-01fb1ee elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"01fb1ee\" 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-4b6717b\" data-id=\"4b6717b\" 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-b38b51f elementor-widget elementor-widget-text-editor\" data-id=\"b38b51f\" 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>1. Excessive temperatures cause post-crosslinking, which makes the O-ring stiff. The material should therefore be designed with some certainty with regard to temperature.<\/p>\n<p>2. A common mistake is that the design department has designed the groove space too small. The optimum is 15% to 30% free groove space after pressing the O-ring.<\/p>\n<p>3. If the O-ring is older than specified in DIN 7716 (bearing for elastomers), it is possible that, among other things, the plasticizers will dissolve from the O-ring and the O-ring will lose its elasticity accordingly. Make sure that you order from a supplier who stocks in accordance with DIN 7716.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Permanent deformation #1 What is meant by permanent deformation? An O-ring is said to be permanently deformed if the former round cross-section of the O-ring has become deformed and no longer returns to its original shape despite the absence of load. The ability to return to its original shape after pressing is indicated on the &#8230; <a title=\"Permanent deformation | O-ring lexicon\" class=\"read-more\" href=\"https:\/\/nh-oring.de\/en\/permanent-deformation-o-ring-lexicon\/\" aria-label=\"Read more about Permanent deformation | O-ring lexicon\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-24039","page","type-page","status-publish"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Permanent deformation of O-rings | O-ring lexicon<\/title>\n<meta name=\"description\" content=\"How to avoid permanent deformation of O-rings \u2705 O-ring lexicon \u2705 O-ring technical terms \u2705 Click here!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nh-oring.de\/en\/permanent-deformation-o-ring-lexicon\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Permanent deformation of O-rings | O-ring lexicon\" \/>\n<meta property=\"og:description\" content=\"How to avoid permanent deformation of O-rings \u2705 O-ring lexicon \u2705 O-ring technical terms \u2705 Click here!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nh-oring.de\/en\/permanent-deformation-o-ring-lexicon\/\" \/>\n<meta property=\"og:site_name\" content=\"NH O-RING - 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