{"id":4870,"date":"2021-08-19T16:46:26","date_gmt":"2021-08-19T14:46:26","guid":{"rendered":"http:\/\/elastomer-institut.de\/?post_type=portfolio&#038;p=4870"},"modified":"2023-02-02T12:20:19","modified_gmt":"2023-02-02T11:20:19","slug":"ozone-resistance","status":"publish","type":"portfolio","link":"https:\/\/elastomer-institut.de\/en\/pruefungen\/ozone-resistance\/","title":{"rendered":"Ozone Resistance"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1g50o-b0b4598535701ae00818f31505b026ae\">\n.avia-section.av-1g50o-b0b4598535701ae00818f31505b026ae .av-parallax .av-parallax-inner{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/elastomer-institut.de\/wp-content\/uploads\/2021\/08\/Ozonpruefung-Intro.jpg);\nbackground-position:50% 100%;\nbackground-attachment:scroll;\n}\n.avia-section.av-1g50o-b0b4598535701ae00818f31505b026ae .av-section-color-overlay{\nopacity:0.3;\nbackground-color:#123940;\n}\n#top .avia-section.av-1g50o-b0b4598535701ae00818f31505b026ae .scroll-down-link{\ncolor:#ffffff;\n}\n#top .avia-section.av-1g50o-b0b4598535701ae00818f31505b026ae .scroll-down-link.avia-svg-icon svg:first-child{\nstroke:#ffffff;\nfill:#ffffff;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-1g50o-b0b4598535701ae00818f31505b026ae alternate_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  intro avia-full-stretch av-parallax-section avia-bg-style-parallax av-section-color-overlay-active av-minimum-height av-minimum-height-40 av-height-percent  container_wrap fullsize'  data-section-bg-repeat='stretch' data-av_minimum_height_pc='40' data-av_min_height_opt='percent'><div class='av-parallax' data-avia-parallax-ratio='0.3' ><div class='av-parallax-inner alternate_color avia-full-stretch'><\/div><\/div><div class=\"av-section-color-overlay-wrap\"><div class=\"av-section-color-overlay\"><\/div><a href='#next-section' title='' class='scroll-down-link av-custom-scroll-down-color avia-svg-icon avia-font-svg_entypo-fontello' data-av_svg_icon='down-open-mini' data-av_iconset='svg_entypo-fontello'><svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"15\" height=\"32\" viewBox=\"0 0 15 32\" preserveAspectRatio=\"xMidYMid meet\" aria-labelledby='av-svg-title-1' aria-describedby='av-svg-desc-1' role=\"graphics-symbol\" aria-hidden=\"true\">\n<title id='av-svg-title-1'>Scroll to next section<\/title>\n<desc id='av-svg-desc-1'>Scroll to next section<\/desc>\n<path d=\"M12.96 12.16q0.704-0.832 1.536 0 0.832 0.704 0 1.536l-6.272 6.144q-0.704 0.704-1.536 0l-6.272-6.144q-0.832-0.832 0-1.536 0.768-0.768 1.6 0l5.44 4.992z\"><\/path>\n<\/svg><\/a><div class='container av-section-cont-open' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4870'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-vqg8-0fbd2b24b540e5c55596e312e074b98b\">\n.flex_column.av-vqg8-0fbd2b24b540e5c55596e312e074b98b{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-vqg8-0fbd2b24b540e5c55596e312e074b98b av_one_full  avia-builder-el-1  avia-builder-el-no-sibling  first flex_column_div av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ksugecvr-76bd80d9d8110446e478189233a01765\">\n#top .av-special-heading.av-ksugecvr-76bd80d9d8110446e478189233a01765{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-ksugecvr-76bd80d9d8110446e478189233a01765 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-ksugecvr-76bd80d9d8110446e478189233a01765 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-ksugecvr-76bd80d9d8110446e478189233a01765 av-special-heading-h1 blockquote modern-quote modern-centered  avia-builder-el-2  avia-builder-el-no-sibling '><h1 class='av-special-heading-tag '  itemprop=\"headline\"  >Ozone Resistance<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div>\n\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><\/div><div id='av_section_2'  class='avia-section av-1f6ls-2086bebd1c99d72deef9786cb38f3f73 alternate_color avia-section-large avia-no-border-styling  avia-builder-el-3  el_after_av_section  el_before_av_section  small-intro avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4870'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-vqg8-12-acfd6dbcf548a27b987188673ca8c85d\">\n.flex_column.av-vqg8-12-acfd6dbcf548a27b987188673ca8c85d{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-vqg8-12-acfd6dbcf548a27b987188673ca8c85d av_one_full  avia-builder-el-4  el_before_av_one_half  avia-builder-el-first  first flex_column_div av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ksugf4n6-946d8bfe356d1e0863a35d520fa19a8a\">\n#top .av-special-heading.av-ksugf4n6-946d8bfe356d1e0863a35d520fa19a8a{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-ksugf4n6-946d8bfe356d1e0863a35d520fa19a8a .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-ksugf4n6-946d8bfe356d1e0863a35d520fa19a8a .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-ksugf4n6-946d8bfe356d1e0863a35d520fa19a8a av-special-heading-h2 blockquote modern-quote modern-centered  avia-builder-el-5  avia-builder-el-no-sibling '><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >Significance and Test Method<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-vqg8-10-f0b729fe4f07bf6abca586216defd583\">\n.flex_column.av-vqg8-10-f0b729fe4f07bf6abca586216defd583{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-vqg8-10-f0b729fe4f07bf6abca586216defd583 av_one_half  avia-builder-el-6  el_after_av_one_full  el_before_av_one_half  first flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kkxx73rg-4887e18e34d25eb9f5a6c84405a7ba68 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Ozone is a colourless and toxic trace gas and, as ozone layer in our atmosphere, protects us from the sun&#8217;s harmful UV radiation. It consists of three oxygen atoms and is highly reactive. The chemical formula is O3.<\/p>\n<p style=\"text-align: left\">Close to the ground, ozone results from complex photochemical processes and, in sufficient concentrations, damages not only the health of living creatures but also plants and materials.<\/p>\n<\/div><\/section><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-vqg8-9-554028550d046a36f23ba9de87d6d8db\">\n.flex_column.av-vqg8-9-554028550d046a36f23ba9de87d6d8db{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-vqg8-9-554028550d046a36f23ba9de87d6d8db av_one_half  avia-builder-el-8  el_after_av_one_half  avia-builder-el-last  flex_column_div av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-kkxx73rg-8-fcff837ebd3a506805c5b237f29469a3 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Highly unsaturated polymers, especially NBR, NR and SBR, are particularly vulnerable. The double bonds of the polymer main chain contained in the unsaturated elastomers are crucial. These can easily break down due to the ozone gas and react with the oxygen atoms of the ozone. Even an ozone concentration typical for the environment leads to the so-called ozone cracks when the components are subjected to additional stress. These are deep cracks vertical to the direction of stress.<\/p>\n<\/div><\/section><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_3'  class='avia-section av-klm050jf-e6e5a3ef0f1a99a6bd014cad9a5038fe main_color avia-section-large avia-no-border-styling  avia-builder-el-10  el_after_av_section  el_before_av_section  img-text-section no-padding-top avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4870'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1qtfk-6edde0e630ee4a172f87280333261f4f\">\n@keyframes av_boxShadowEffect_av-1qtfk-6edde0e630ee4a172f87280333261f4f-column {\n0%   { box-shadow:  0 0 0 0 rgba(164,164,164,0.4); opacity: 1; }\n100% { box-shadow:  0 0 25px 0 rgba(164,164,164,0.4); opacity: 1; }\n}\n.flex_column.av-1qtfk-6edde0e630ee4a172f87280333261f4f{\nbox-shadow: 0 0 25px 0 rgba(164,164,164,0.4);\nborder-radius:0px 0px 0px 0px;\npadding:60px 60px 60px 60px;\n}\n<\/style>\n<div  class='flex_column av-1qtfk-6edde0e630ee4a172f87280333261f4f av_one_half  avia-builder-el-11  el_before_av_one_half  avia-builder-el-first  first no_margin flex_column_div shadow-not-animated  '     ><section  class='av_textblock_section av-kkxx73rg-6-ba432d7cbbf07c92946d59c025468d94 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h4>Significance for Application Technology<\/h4>\n<p>In practice, ozone cracks occur particularly on pre-assembled, that is, stretched NBR seals that are exposed to the environment without protection. The typical damage to the components already occurs at an elongation of 3-5% and contact with ozone-containing air in free exchange.<\/p>\n<p>Ozone-protected elastomers contain ozone protection agents, for example antioxidants and ozone protection waxes, which as &#8220;pawn sacrifices&#8221; react primarily with the surrounding ozone or are washed off. Depending on the ozone concentration, this protection lasts only for a limited time, which depends on the application conditions.<\/p>\n<p>Ozone tests provide information about the ozone resistance of materials and help to evaluate the effectiveness of the ozone protection used.<\/p>\n<h4>The Ozone Test<\/h4>\n<p>(DIN) ISO 1431 describes methods for determining the resistance of elastomers or thermoplastic elastomers to ozone cracking. It replaces the well-known DIN 53509 and describes static and dynamic tests. DIN EN ISO 7326 defines different test methods for the examination of hoses.<\/p>\n<p>During the test for ozone resistance, the material samples are stretched as specified and exposed to a defined ozone concentration for a fixed, limited time. After the test, we examine the samples for cracks.<\/p>\n<\/div><\/section><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1qtfk-4-38c97fbb3a78aa39006ba8367fa94761\">\n@keyframes av_boxShadowEffect_av-1qtfk-4-38c97fbb3a78aa39006ba8367fa94761-row {\n0%   { box-shadow:  0 0 0 0 rgba(164,164,164,0.4); opacity: 1; }\n100% { box-shadow:  0 0 25px 0 rgba(164,164,164,0.4); opacity: 1; }\n}\n@keyframes av_boxShadowEffect_av-1qtfk-4-38c97fbb3a78aa39006ba8367fa94761-column {\n0%   { box-shadow:  0 0 0 0 rgba(164,164,164,0.4); opacity: 1; }\n100% { box-shadow:  0 0 25px 0 rgba(164,164,164,0.4); opacity: 1; }\n}\n.flex_column_table.av-equal-height-column-flextable.av-1qtfk-4-38c97fbb3a78aa39006ba8367fa94761{\nbox-shadow: 0 0 25px 0 rgba(164,164,164,0.4);\n}\n.flex_column.av-1qtfk-4-38c97fbb3a78aa39006ba8367fa94761{\nbox-shadow: 0 0 25px 0 rgba(164,164,164,0.4);\nborder-radius:0px 0px 0px 0px;\npadding:0 0 0 0;\n}\n<\/style>\n<div  class='flex_column av-1qtfk-4-38c97fbb3a78aa39006ba8367fa94761 av_one_half  avia-builder-el-13  el_after_av_one_half  avia-builder-el-last  no_margin flex_column_div shadow-not-animated av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-12pj4-c13dfdc0f1e7ca9ce98e7dce2dad0d86\">\n.avia-image-container.av-12pj4-c13dfdc0f1e7ca9ce98e7dce2dad0d86 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-12pj4-c13dfdc0f1e7ca9ce98e7dce2dad0d86 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-12pj4-c13dfdc0f1e7ca9ce98e7dce2dad0d86 av-styling- avia-align-center  avia-builder-el-14  avia-builder-el-no-sibling '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3617 avia-img-lazy-loading-not-3617 avia_image ' src=\"https:\/\/elastomer-institut.de\/wp-content\/uploads\/2021\/08\/Ozonpruefung.jpg\" alt='' title='Ozonpr\u00fcfung'  height=\"840\" width=\"1200\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/elastomer-institut.de\/wp-content\/uploads\/2021\/08\/Ozonpruefung.jpg 1200w, https:\/\/elastomer-institut.de\/wp-content\/uploads\/2021\/08\/Ozonpruefung-300x210.jpg 300w, https:\/\/elastomer-institut.de\/wp-content\/uploads\/2021\/08\/Ozonpruefung-1030x721.jpg 1030w, https:\/\/elastomer-institut.de\/wp-content\/uploads\/2021\/08\/Ozonpruefung-768x538.jpg 768w, https:\/\/elastomer-institut.de\/wp-content\/uploads\/2021\/08\/Ozonpruefung-705x494.jpg 705w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/div><\/div><\/div><\/div>\n<\/p>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_4'  class='avia-section av-1f6ls-11-69e58d1fcb31679ad40496be68bbe9c7 alternate_color avia-section-large avia-no-border-styling  avia-builder-el-15  el_after_av_section  el_before_av_section  small-intro avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4870'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-vqg8-7-47fc1580261bfbb62bf04f662c46ba3e\">\n.flex_column.av-vqg8-7-47fc1580261bfbb62bf04f662c46ba3e{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-vqg8-7-47fc1580261bfbb62bf04f662c46ba3e av_one_full  avia-builder-el-16  avia-builder-el-no-sibling  first flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3khlic-7436bd7bc6b46011b0e4be37e9f2a79d\">\n#top .av-special-heading.av-3khlic-7436bd7bc6b46011b0e4be37e9f2a79d{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-3khlic-7436bd7bc6b46011b0e4be37e9f2a79d .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-3khlic-7436bd7bc6b46011b0e4be37e9f2a79d .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-3khlic-7436bd7bc6b46011b0e4be37e9f2a79d av-special-heading-h4 blockquote modern-quote modern-centered  avia-builder-el-17  el_before_av_textblock  avia-builder-el-first '><h4 class='av-special-heading-tag '  itemprop=\"headline\"  >Downloads<\/h4><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-kkxx73rg-3-42d75da5e66ba365544da876eeec4e7b '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock after-headline'  itemprop=\"text\" ><p style=\"text-align: center\">You can find more information on the damage pattern of ozone cracks in our technical reports:<\/p>\n<\/div><\/section><\/p><\/div>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_5'  class='avia-section av-klm050jf-5-6d1b45e2ba5a74abb309b978b7693f74 alternate_color avia-section-large avia-no-border-styling  avia-builder-el-19  el_after_av_section  avia-builder-el-last  no-padding-top acc avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4870'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1efst-8802404aeff588d61c322b982fa0e1c6\">\n.flex_column.av-1efst-8802404aeff588d61c322b982fa0e1c6{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-1efst-8802404aeff588d61c322b982fa0e1c6 av_one_half  avia-builder-el-20  el_before_av_one_half  avia-builder-el-first  first flex_column_div av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-km38ga7n-b0bbf760837148d8537bed151671bcb6\">\n#top .togglecontainer.av-km38ga7n-b0bbf760837148d8537bed151671bcb6 p.toggler{\nborder-color:#a3c54e;\n}\n#top .togglecontainer.av-km38ga7n-b0bbf760837148d8537bed151671bcb6 .toggle_wrap .toggle_content{\nborder-color:#a3c54e;\n}\n<\/style>\n<div  class='togglecontainer av-km38ga7n-b0bbf760837148d8537bed151671bcb6 av-elegant-toggle  avia-builder-el-21  avia-builder-el-no-sibling  toggle_close_all' >\n<section class='av_toggle_section av-2i4n04-251a5211288a9e3126b2f40779eb632d'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-1' data-fake-id='#toggle-id-1' class='toggler  av-title-above av-inherit-border-color'  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-1' data-slide-speed=\"200\" data-title=\"Ozone cracks on elastomer seals and materials (long version)\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: Ozone cracks on elastomer seals and materials (long version)\" data-aria_expanded=\"Click to collapse: Ozone cracks on elastomer seals and materials (long version)\">Ozone cracks on elastomer seals and materials (long version)<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-1' aria-labelledby='toggle-toggle-id-1' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color av-inherit-border-color'  itemprop=\"text\" ><p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3852 alignleft\" src=\"http:\/\/elastomer-institut.de\/wp-content\/uploads\/2021\/09\/Bild_FB_Ozonrisse.jpg\" alt=\"\" width=\"150\" height=\"200\" \/><\/p>\n<p>In this article you will find background information on the failure mode of ozone cracks and learn how to distinguish this damage from others on the component. We provide information about testing possibilities and give tips on to prevent ozone cracks in practice.<\/p>\n<div  class='avia-button-wrap av-1xniqw-907530a448444b119f7bcae74ee18d0e-wrap avia-button-left  avia-builder-el-22  avia-builder-el-no-sibling '><a href='http:\/\/elastomer-institut.de\/wp-content\/uploads\/2022\/08\/FB_GB_ozone_cracks_long_version.pdf'  class='avia-button av-1xniqw-907530a448444b119f7bcae74ee18d0e av-link-btn avia-icon_select-yes-left-icon avia-size-medium avia-position-left avia-color-theme-color'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"PDF laden\"><span class='avia_button_icon avia_button_icon_left avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue82d' data-av_iconfont='entypo-fontello' ><\/span><span class='avia_iconbox_title' >PDF laden<\/span><\/a><\/div>\n<\/div><\/div><\/div><\/section>\n<\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4be8na-d04c1efed96b6ac2db866e8a1a81beae\">\n.flex_column.av-4be8na-d04c1efed96b6ac2db866e8a1a81beae{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-4be8na-d04c1efed96b6ac2db866e8a1a81beae av_one_half  avia-builder-el-23  el_after_av_one_half  avia-builder-el-last  flex_column_div av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l78rpbvz-ca6a646fb6463c0b8026556f834748e5\">\n#top .togglecontainer.av-l78rpbvz-ca6a646fb6463c0b8026556f834748e5 p.toggler{\nborder-color:#a3c54e;\n}\n#top .togglecontainer.av-l78rpbvz-ca6a646fb6463c0b8026556f834748e5 .toggle_wrap .toggle_content{\nborder-color:#a3c54e;\n}\n<\/style>\n<div  class='togglecontainer av-l78rpbvz-ca6a646fb6463c0b8026556f834748e5 av-elegant-toggle  avia-builder-el-24  avia-builder-el-no-sibling  toggle_close_all' >\n<section class='av_toggle_section av-l78roj0z-991ec7fd35cd0b9dd98ec3e1c184d1f9'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-2' data-fake-id='#toggle-id-2' class='toggler  av-title-above av-inherit-border-color'  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-2' data-slide-speed=\"200\" data-title=\"Ozone cracks on elastomer seals and materials (short version)\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: Ozone cracks on elastomer seals and materials (short version)\" data-aria_expanded=\"Click to collapse: Ozone cracks on elastomer seals and materials (short version)\">Ozone cracks on elastomer seals and materials (short version)<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-2' aria-labelledby='toggle-toggle-id-2' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color av-inherit-border-color'  itemprop=\"text\" ><p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3852 alignleft\" src=\"http:\/\/elastomer-institut.de\/wp-content\/uploads\/2021\/09\/Bild_FB_Ozonrisse.jpg\" alt=\"\" width=\"150\" height=\"200\" \/><\/p>\n<p>In this article you will find background information on the failure mode of ozone cracks and learn how to distinguish this damage from others on the component. We provide information about testing possibilities and give tips on to prevent ozone cracks in practice.<\/p>\n<div  class='avia-button-wrap av-2zvukm-188671ca8cde852325ed6781c16b9cf3-wrap avia-button-left  avia-builder-el-25  avia-builder-el-no-sibling '><a href='http:\/\/elastomer-institut.de\/wp-content\/uploads\/2022\/08\/FB_GB_ozone_cracks_short_version.pdf'  class='avia-button av-2zvukm-188671ca8cde852325ed6781c16b9cf3 av-link-btn avia-icon_select-yes-left-icon avia-size-medium avia-position-left avia-color-theme-color'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"PDF laden\"><span class='avia_button_icon avia_button_icon_left avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue82d' data-av_iconfont='entypo-fontello' ><\/span><span class='avia_iconbox_title' >PDF laden<\/span><\/a><\/div>\n<\/div><\/div><\/div><\/section>\n<\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Ozone, a highly reactive gas, is formed near the ground by complex photochemical processes. In sufficient concentrations, it particularly damages highly unsaturated polymers, especially NBR, NR and SBR.  In practice, this occurs mainly on pre-assembled, i.e. stretched, components. <\/p>\n","protected":false},"author":2,"featured_media":3550,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"footnotes":""},"tags":[],"portfolio_entries":[7],"class_list":["post-4870","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","portfolio_entries-aging-and-durability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ozone Resistance - Elastomer Institut by OPR Group GmbH<\/title>\n<meta name=\"description\" content=\"We test the ozone resistance of your elastomer products for you and help to select the most suitable materials.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/elastomer-institut.de\/en\/pruefungen\/ozone-resistance\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ozone Resistance - 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