{"id":9653,"date":"2021-07-15T06:46:01","date_gmt":"2021-07-15T06:46:01","guid":{"rendered":"https:\/\/monroeengineering.com\/blog\/?p=9653"},"modified":"2024-12-03T20:22:25","modified_gmt":"2024-12-03T20:22:25","slug":"the-abcs-of-o-rings-7-terms-you-need-to-know","status":"publish","type":"post","link":"https:\/\/monroeengineering.com\/blog\/the-abcs-of-o-rings-7-terms-you-need-to-know\/","title":{"rendered":"The ABCs of O-Rings: 7 Terms You Need to Know"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"alignleft\"><img loading=\"lazy\" decoding=\"async\" width=\"320\" height=\"213\" src=\"https:\/\/monroeengineering.com\/blog\/wp-content\/uploads\/2021\/06\/monroe-o-ringsa144144.jpg\" alt=\"Spring-energized seals by Monroe Engineering\" class=\"wp-image-9542\" srcset=\"https:\/\/monroeengineering.com\/blog\/wp-content\/uploads\/2021\/06\/monroe-o-ringsa144144.jpg 320w, https:\/\/monroeengineering.com\/blog\/wp-content\/uploads\/2021\/06\/monroe-o-ringsa144144-300x200.jpg 300w\" sizes=\"auto, (max-width: 320px) 100vw, 320px\" \/><\/figure><\/div>\n\n\n\n<p>When researching O-rings, you may encounter some unfamiliar terms. O-rings are seals that offer a leak-proof mating surface. They are typically used in machines, vehicles and other types of mechanical equipment. With O-rings, fluids or gases will remain confined to their respective passage. To choose the right O-rings, though, you&#8217;ll need to learn some basic terms and what they mean.<br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#1) Inside Diameter<\/h2>\n\n\n\n<p>Inside diameter refers to the size of an O-ring when measured across its interior. You find an O-ring&#8217;s inside diameter by stretching a measuring tape from the left-most interior section to the right-most interior section.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#2) Outside Diameter<\/h2>\n\n\n\n<p>Outside diameter, on the other hand, refers to the size of an O-ring when measured across its exterior. The outside diameter is almost always longer than the inside diameter. If you&#8217;re going to buy one or more O-rings, you&#8217;ll need to consider both the inside diameter and outside diameter.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#3) Groove<\/h2>\n\n\n\n<p>All O-rings have a groove. The groove is a recessed section along the perimeter of an O-ring that allows it to fit inside of a machine. Machines have passages or hoses for pressurized liquids and gases. At the end of these passages and hoses is a protruded ring. With a groove, you can slide an O-ring over this protruded section so that it stays in place.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#4) Hardness<\/h2>\n\n\n\n<p>Hardness, of course, refers to the hardness level of an O-ring. Different O-rings are made of different materials, some of which are harder than others. A hardness of 40 is considered soft, whereas a hardness of 90 is considered hard. You can measure the hardness of an O-ring by using a Shore A Durometer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#5) Face<\/h2>\n\n\n\n<p>There are face O-rings. A face O-ring is a type of mechanical seal that&#8217;s characterized by the way in which it seals. Face O-rings seal in a place that&#8217;s perpendicular to their axis. This unique design offers a clean and flush mating surface.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#6) Tensile<\/h2>\n\n\n\n<p>Tensile is another term that you should know when shopping for O-rings. It&#8217;s how much force, measured in pounds per square inch (PSI), an O-ring can withstand without breaking. The higher an O-ring&#8217;s tensile, the more force it can withstand.<br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">#7) Flash<\/h2>\n\n\n\n<p>Finally, O-rings have a flash. The flash is a section of excess material that&#8217;s left around an O-ring&#8217;s parting lines. Most O-rings have some flash. You can find it along the parting lines.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When researching O-rings, you may encounter some unfamiliar terms. O-rings are seals that offer a leak-proof mating surface. They are typically used in machines, vehicles and other types of mechanical equipment. With O-rings, fluids or gases will remain confined to &hellip; <a class=\"continue-reading\" href=\"https:\/\/monroeengineering.com\/blog\/the-abcs-of-o-rings-7-terms-you-need-to-know\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":9542,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10016,84],"tags":[735,8434],"class_list":["post-9653","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-o-rings","category-seals","tag-o-rings","tag-seals"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The ABCs of O-Rings: 7 Terms You Need to Know | OneMonroe<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/monroeengineering.com\/blog\/the-abcs-of-o-rings-7-terms-you-need-to-know\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The ABCs of O-Rings: 7 Terms You Need to Know | OneMonroe\" \/>\n<meta property=\"og:description\" content=\"When researching O-rings, you may encounter some unfamiliar terms. 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