{"id":763,"date":"2025-06-19T19:36:33","date_gmt":"2025-06-20T01:36:33","guid":{"rendered":"https:\/\/www.hitechseals.com\/?post_type=product&#038;p=763"},"modified":"2026-03-30T14:44:36","modified_gmt":"2026-03-30T20:44:36","slug":"back-up-rings","status":"publish","type":"product","link":"https:\/\/www.hitechseals.com\/product\/back-up-rings\/","title":{"rendered":"Back-Up Rings"},"content":{"rendered":"<div class=\"wpb-content-wrapper\">[vc_row content_placement=&#8221;middle&#8221; sm=&#8221;40&#8243; md=&#8221;60&#8243; lg=&#8221;100&#8243; lgb=&#8221;60&#8243;][vc_column offset=&#8221;vc_col-lg-7&#8243; el_class=&#8221;order-lg-1&#8243;][vc_column_text css=&#8221;&#8221;]Back-up rings are plastic or rubber rings used to prevent the O-ring from entering the clearance gap. When high pressures are exerted on the O-ring, its soft rubber material can be forced into the clearance gap, causing the O-ring to extrude (see our <a href=\"https:\/\/www.hitechseals.com\/wp-content\/uploads\/2025\/06\/O-Ring_Design_Guide.pdf\">O-ring Design Guide<\/a> for examples of O-ring failure).\r\n\r\nThe hard back-up ring material will keep the O-ring material from flowing into the gap, which will prevent premature failure. MIL spec numbers 27595, 28774, and 28782 are for reference purposes only. See back-up rings literature for more information.\r\n\r\nView our <a href=\"https:\/\/www.hitechseals.com\/manufacturing\/rapid-seal-machining\/rapid-seal-profiles\/\">Back-Up Ring machining profiles<\/a>[\/vc_column_text][\/vc_column][\/vc_row][vc_row sm=&#8221;0&#8243; smb=&#8221;40&#8243; md=&#8221;0&#8243; mdb=&#8221;60&#8243; lg=&#8221;0&#8243; lgb=&#8221;100&#8243;][vc_column][web3_vc_db_profiles sm=&#8221;&#8221; md=&#8221;&#8221; lg=&#8221;&#8221;][\/web3_vc_db_profiles][\/vc_column][\/vc_row]<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row content_placement=&#8221;middle&#8221; sm=&#8221;40&#8243; md=&#8221;60&#8243; lg=&#8221;100&#8243; lgb=&#8221;60&#8243;][vc_column offset=&#8221;vc_col-lg-7&#8243; el_class=&#8221;order-lg-1&#8243;][vc_column_text css=&#8221;&#8221;]Back-up rings are plastic or rubber rings used to prevent the O-ring from entering&hellip;<\/p>\n","protected":false},"featured_media":766,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[27],"product_tag":[],"class_list":{"0":"post-763","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-seals","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Back-Up Rings - Hi-Tech Seals<\/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:\/\/www.hitechseals.com\/product\/back-up-rings\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Back-Up Rings - Hi-Tech Seals\" \/>\n<meta property=\"og:description\" content=\"[vc_row content_placement=&#8221;middle&#8221; sm=&#8221;40&#8243; md=&#8221;60&#8243; lg=&#8221;100&#8243; lgb=&#8221;60&#8243;][vc_column offset=&#8221;vc_col-lg-7&#8243; el_class=&#8221;order-lg-1&#8243;][vc_column_text css=&#8221;&#8221;]Back-up rings are plastic or rubber rings used to prevent the O-ring from entering&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.hitechseals.com\/product\/back-up-rings\/\" \/>\n<meta property=\"og:site_name\" content=\"Hi-Tech Seals\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-30T20:44:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.hitechseals.com\/wp-content\/uploads\/2025\/06\/hitechseals.figure.product.back-up-rings.01.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"452\" \/>\n\t<meta property=\"og:image:height\" content=\"226\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/product\\\/back-up-rings\\\/\",\"url\":\"https:\\\/\\\/www.hitechseals.com\\\/product\\\/back-up-rings\\\/\",\"name\":\"Back-Up Rings - Hi-Tech Seals\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/product\\\/back-up-rings\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/product\\\/back-up-rings\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.hitechseals.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/hitechseals.figure.product.back-up-rings.01.jpg\",\"datePublished\":\"2025-06-20T01:36:33+00:00\",\"dateModified\":\"2026-03-30T20:44:36+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/product\\\/back-up-rings\\\/#breadcrumb\"},\"inLanguage\":\"en-CA\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.hitechseals.com\\\/product\\\/back-up-rings\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-CA\",\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/product\\\/back-up-rings\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.hitechseals.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/hitechseals.figure.product.back-up-rings.01.jpg\",\"contentUrl\":\"https:\\\/\\\/www.hitechseals.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/hitechseals.figure.product.back-up-rings.01.jpg\",\"width\":452,\"height\":226},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/product\\\/back-up-rings\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.hitechseals.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Back-Up Rings\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/#website\",\"url\":\"https:\\\/\\\/www.hitechseals.com\\\/\",\"name\":\"Hi-Tech Seals\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.hitechseals.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-CA\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/#organization\",\"name\":\"Hi-Tech Seals\",\"url\":\"https:\\\/\\\/www.hitechseals.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-CA\",\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.hitechseals.com\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/HTS-Logo.png\",\"contentUrl\":\"https:\\\/\\\/www.hitechseals.com\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/HTS-Logo.png\",\"width\":354,\"height\":88,\"caption\":\"Hi-Tech Seals\"},\"image\":{\"@id\":\"https:\\\/\\\/www.hitechseals.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.youtube.com\\\/@Hi-TechSealsInc\",\"https:\\\/\\\/ca.linkedin.com\\\/company\\\/hi-tech-seals\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Back-Up Rings - Hi-Tech Seals","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.hitechseals.com\/product\/back-up-rings\/","og_locale":"en_US","og_type":"article","og_title":"Back-Up Rings - Hi-Tech Seals","og_description":"[vc_row content_placement=&#8221;middle&#8221; 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