{"id":1733,"date":"2024-09-16T15:48:14","date_gmt":"2024-09-16T13:48:14","guid":{"rendered":"https:\/\/o-ring-prueflabor.de\/leistungen\/ozone-resistance\/"},"modified":"2024-10-28T11:31:43","modified_gmt":"2024-10-28T10:31:43","slug":"ozone-resistance","status":"publish","type":"leistungen","link":"https:\/\/o-ring-prueflabor.de\/en\/services\/ozone-resistance\/","title":{"rendered":"Ozone Resistance"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Testing Elastomers for Environmental Influences<\/h2>\n\n<p class=\"wp-block-paragraph\">Under normal environmental ozone concentrations elastomer materials may form deep cracks which usually lead to a failure of a component. But the following conditions are prerequisite: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>a highly unsaturated polymer, e.g. NBR, NR or SBR<\/li>\n\n\n\n<li>a deformation &gt; 3-5%<\/li>\n\n\n\n<li>an admission of ozoniferous air (an unbraked air exchange at the seal)<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">In practice this occurs particularly at pre-installed NBR-seals which are exposed to their environment. In contrast this does normally not occur at installed seals. To a certain degree NBR-materials can be protected against the exposure of ozone by certain additives. The effectiveness of these additives can be ascertained by ozone tests. In the process samples are exposed to a defined ozone concentration (e.g. 50 pphm) at a given stretching (e.g. 20%) over a limited period of time (e.g. 48h). Afterwards the sample is checked for cracks.     <\/p>\n\n<p class=\"wp-block-paragraph\">The Richter O-ring testing laboratory currently has 3 ozone testing devices available to carry out ozone resistance tests on behalf of customers.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Standards: DIN 53 509, ISO 1431.<\/strong><\/p>\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-1.jpg\" data-lbwps-width=\"1200\" data-lbwps-height=\"840\" data-lbwps-srcsmall=\"https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-1-300x210.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"717\" data-id=\"549\" src=\"https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-1-1024x717.jpg\" alt=\"\" class=\"wp-image-549\" srcset=\"https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-1-1024x717.jpg 1024w, https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-1-980x686.jpg 980w, https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-1-480x336.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-2.jpg\" data-lbwps-width=\"1200\" data-lbwps-height=\"840\" data-lbwps-srcsmall=\"https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-2-300x210.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"717\" data-id=\"548\" src=\"https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-2-1024x717.jpg\" alt=\"\" class=\"wp-image-548\" srcset=\"https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-2-1024x717.jpg 1024w, https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-2-980x686.jpg 980w, https:\/\/o-ring-prueflabor.de\/wp-content\/uploads\/2024\/09\/ozonbestand-2-480x336.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/a><\/figure>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Testing Elastomers for Environmental Influences Under normal environmental ozone concentrations elastomer materials may form deep cracks which usually lead to a failure of a component. But the following conditions are prerequisite: In practice this occurs particularly at pre-installed NBR-seals which are exposed to their environment. In contrast this does normally not occur at installed seals. [&hellip;]<\/p>\n","protected":false},"featured_media":1424,"menu_order":0,"template":"","format":"standard","class_list":["post-1733","leistungen","type-leistungen","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/o-ring-prueflabor.de\/en\/wp-json\/wp\/v2\/leistungen\/1733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/o-ring-prueflabor.de\/en\/wp-json\/wp\/v2\/leistungen"}],"about":[{"href":"https:\/\/o-ring-prueflabor.de\/en\/wp-json\/wp\/v2\/types\/leistungen"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/o-ring-prueflabor.de\/en\/wp-json\/wp\/v2\/media\/1424"}],"wp:attachment":[{"href":"https:\/\/o-ring-prueflabor.de\/en\/wp-json\/wp\/v2\/media?parent=1733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}