{"id":2418,"date":"2026-07-15T14:08:00","date_gmt":"2026-07-15T14:08:00","guid":{"rendered":"https:\/\/www.oem-silicone.com\/?p=2418"},"modified":"2026-07-17T10:25:49","modified_gmt":"2026-07-17T10:25:49","slug":"guijiaomifengdianpianhouduzenmexuanyasuolianggongchaiyumifen-2","status":"publish","type":"post","link":"https:\/\/www.oem-silicone.com\/en\/guixiangjiaozhishi\/2418\/","title":{"rendered":"How to Select the Thickness of a Silicone Sealing Gasket: Compression, Tolerance, and Sealing Surface"},"content":{"rendered":"<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>The thickness of a silicone seal determines the initial compression and assembly tolerance. When selecting the thickness, a comprehensive evaluation should be made, taking into account the housing clearance, tolerances, screw preload, and long-term rebound.<\/p><\/blockquote>\n\n<h4 class=\"wp-block-heading\">1. First, establish the dimensional chain<\/h4>\n\n<p class=\"wp-block-paragraph\">Selecting shims based solely on the nominal clearance can lead to overlooking the flatness of the housing and the cumulative tolerances of the parts.<\/p>\n\n<ul class=\"wp-block-list\"><li>List the size ranges for the housing, grooves, and gaskets<\/li><li>Identify the maximum and minimum compression states<\/li><li>Consider the effects of warping on long, narrow or large, flat structures<\/li><\/ul>\n\n<h4 class=\"wp-block-heading\">2. Set a reasonable compression level<\/h4>\n\n<p class=\"wp-block-paragraph\">Insufficient compression can cause leaks, while excessive compression accelerates permanent deformation and increases assembly force.<\/p>\n\n<ul class=\"wp-block-list\"><li>Determine the Design Window Based on Material and Cross-Section Shape<\/li><li>Ensure continuous and uniform circumferential stress distribution<\/li><li>Avoid excessive tightening of screws in specific areas<\/li><\/ul>\n\n<h4 class=\"wp-block-heading\">3. Sealing Surface Requirements<\/h4>\n\n<p class=\"wp-block-paragraph\">Surface roughness, steps, holes, and corners can all create leakage paths.<\/p>\n\n<ul class=\"wp-block-list\"><li>Ensure the sealing surface is free of sharp burrs and scratches<\/li><li>Allow sufficient sealing width around the hole<\/li><li>Round the corners and check the fit.<\/li><\/ul>\n\n<h4 class=\"wp-block-heading\">4. Authentication Methods<\/h4>\n\n<p class=\"wp-block-paragraph\">It is recommended to determine the actual window size through post-installation pressure or water immersion testing.<\/p>\n\n<ul class=\"wp-block-list\"><li>Comparison of Leakage and Assembly Force for Samples of Different Thicknesses<\/li><li>Retesting After Heat Aging<\/li><li>Disassemble the unit to check whether the compression marks are uniform.<\/li><\/ul>\n\n<h4 class=\"wp-block-heading\">FAQ<\/h4>\n\n<p class=\"wp-block-paragraph\">1. Does a thicker gasket provide a better seal?<\/p>\n\n<p class=\"wp-block-paragraph\">Not necessarily. If it is too thick, it may cause over-compression, assembly interference, or uneven screw preload.<\/p>\n\n<p class=\"wp-block-paragraph\">2. Can foam gaskets be used as a substitute for solid silicone?<\/p>\n\n<p class=\"wp-block-paragraph\">Depending on the requirements for protection, temperature resistance, and long-term compression, verification through comparison based on actual operating conditions is necessary.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u7845\u80f6\u5bc6\u5c01\u57ab\u7247\u7684\u539a\u5ea6\u51b3\u5b9a\u521d\u59cb\u538b\u7f29\u91cf\u548c\u88c5\u914d\u5bb9\u5fcd\u5ea6\u3002\u9009\u62e9\u539a\u5ea6\u65f6\u5e94\u4ece\u58f3\u4f53\u95f4\u9699\u3001\u516c\u5dee\u3001\u87ba\u9489\u9884\u7d27\u548c\u957f\u671f\u56de\u5f39\u6574\u4f53\u8bc4\u4f30\u3002 1. [&hellip;]<\/p>","protected":false},"author":1,"featured_media":2657,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"\u7845\u80f6\u5bc6\u5c01\u57ab\u7247\u539a\u5ea6\u9009\u62e9","_seopress_titles_desc":"\u7845\u80f6\u5bc6\u5c01\u57ab\u7247\u7684\u539a\u5ea6\u51b3\u5b9a\u521d\u59cb\u538b\u7f29\u91cf\u548c\u88c5\u914d\u5bb9\u5fcd\u5ea6\u3002\u9009\u62e9\u539a\u5ea6\u65f6\u5e94\u4ece\u58f3\u4f53\u95f4\u9699\u3001\u516c\u5dee\u3001\u87ba\u9489\u9884\u7d27\u548c\u957f\u671f\u56de\u5f39\u6574\u4f53\u8bc4\u4f30\u3002","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"\u7845\u80f6\u5bc6\u5c01\u57ab\u7247,\u7845\u80f6\u57ab\u7247\u539a\u5ea6,\u5bc6\u5c01\u57ab\u538b\u7f29\u91cf","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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