{"id":6988,"date":"2024-01-23T07:48:40","date_gmt":"2024-01-23T07:48:40","guid":{"rendered":"https:\/\/monroeaerospace.com\/blog\/?p=6988"},"modified":"2024-01-23T07:48:42","modified_gmt":"2024-01-23T07:48:42","slug":"5-facts-about-aerospace-o-rings","status":"publish","type":"post","link":"https:\/\/monroeaerospace.com\/blog\/5-facts-about-aerospace-o-rings\/","title":{"rendered":"5 Facts About Aerospace O-Rings"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"281\" height=\"200\" src=\"https:\/\/monroeaerospace.com\/blog\/wp-content\/uploads\/2024\/01\/MS28775.jpg\" alt=\"O-ring by Monroe\" class=\"wp-image-6989\"\/><\/figure>\n<\/div>\n\n\n<p>O-rings play an important role in the aerospace manufacturing industry. Also known as toric joints &#8212; a reference to their circular torus shape &#8212; they are designed to seal the spaces around hoses and other parts. Connection points for hoses are susceptible to leaks. As the fluid or gas flowing through a hose becomes pressurized, it may leak from a connection point. O-rings, however, can seal spaces such as this to protect against leaks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#1) Commercial Airliners Contain Thousands of O-Rings<\/h2>\n\n\n\n<p>While the exact number varies, most commercial airliners contain thousands of O-rings. They are commonly used around oil and fuel lines. Oil and fuel lines, of course, are pressurized. Therefore, they require mechanical seals around connection points, with O-rings being the most common type of mechanical seal used for this purpose.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#2) Rated for Up to 3,000 PSI<\/h2>\n\n\n\n<p>Even when exposed to highly pressurized fluid or gas, high-quality O-rings won&#8217;t leak. After all, they are designed specifically to withstand pressurized fluid or gas. Some O-rings, in fact, are rated for up to 3,000 pounds per square inch (PSI) of pressure.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#3) Available in Dozens of Materials<\/h2>\n\n\n\n<p>You can find O-rings in different materials. Most of the materials in which O-rings are made feature a high level of elasticity. With their elastic properties, they will expand when exposed to hot, pressurized fluid or gas, thereby preventing leaks.<\/p>\n\n\n\n<p><strong>Common materials in which O-rings are made include:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Polytetrafluoroethylene (PTFE)<\/li>\n\n\n\n<li>Ethylene Propylene Diene Terpolymer (EPDM<\/li>\n\n\n\n<li>Perfluoroelastomer (FFKM)<\/li>\n\n\n\n<li>TFE Propylene (Aflas) TetrafluoroethylenePropylene Rubbers<\/li>\n\n\n\n<li>Polysulfide rubber (PSR)<\/li>\n\n\n\n<li>Butadiene rubber (BR)<\/li>\n\n\n\n<li>Butyl rubber (IIR)<\/li>\n\n\n\n<li>Nitrile rubber (NR)<\/li>\n\n\n\n<li>Ethylene propylene rubber (EPR)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">#4) Two O-Rings May Be Used in the Same Space<\/h2>\n\n\n\n<p>It&#8217;s not uncommon for two O-rings to be used in the same space. For sealing applications involving 800 PSI or higher, for example, two O-rings may be used. There&#8217;s a primary O-ring, and a secondary or &#8220;backup&#8221; O-ring. The backup O-ring acts as a failsafe. If the primary O-ring begins to leak, the backup O-ring will provide the necessary sealing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#5) Measured in ID and CS Sizes<\/h2>\n\n\n\n<p>When shopping for O-rings, you&#8217;ll need to consider the inner diameter (ID) and cross-section (CS). The ID refers to the length from the widest point of the <em>inside<\/em> of an O-ring to the opposite side. The CS, in comparison, represents the thickness of an O-ring. You can refer to the ID and CS to determine the size of an O-ring and whether it will fit your intended application.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O-rings play an important role in the aerospace manufacturing industry. Also known as toric joints &#8212; a reference to their circular torus shape &#8212; they are designed to seal the spaces around hoses and other parts. Connection points for hoses &hellip; <a class=\"continue-reading\" href=\"https:\/\/monroeaerospace.com\/blog\/5-facts-about-aerospace-o-rings\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":6989,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-6988","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products"],"acf":[],"_links":{"self":[{"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/posts\/6988","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/comments?post=6988"}],"version-history":[{"count":12,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/posts\/6988\/revisions"}],"predecessor-version":[{"id":7001,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/posts\/6988\/revisions\/7001"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/media\/6989"}],"wp:attachment":[{"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/media?parent=6988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/categories?post=6988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/monroeaerospace.com\/blog\/wp-json\/wp\/v2\/tags?post=6988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}