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class=\"wp-block-heading\">PU\uff08\u30dd\u30ea\u30a6\u30ec\u30bf\u30f3\uff09<\/h2>\n\n\n\n<p>\u30dd\u30ea\u30a6\u30ec\u30bf\u30f3\u306f\u3001\u512a\u308c\u305f\u6a5f\u68b0\u7684\u5f37\u5ea6\u3068\u8010\u6469\u8017\u6027\u3067\u77e5\u3089\u308c\u308b\u30a8\u30e9\u30b9\u30c8\u30de\u30fc\u3067\u3059\u3002\u305d\u306e\u5206\u5b50\u69cb\u9020\u306f\u3001\u30bd\u30d5\u30c8\u30bb\u30b0\u30e1\u30f3\u30c8\u3068\u30cf\u30fc\u30c9\u30bb\u30b0\u30e1\u30f3\u30c8\u304c\u7d44\u307f\u5408\u308f\u3055\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u9ad8\u3044\u5f15\u5f35\u5f37\u5ea6\u3001\u512a\u308c\u305f\u5f15\u88c2\u62b5\u6297\u3001\u512a\u308c\u305f\u6469\u8017\u6027\u80fd\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p>PU\u30b7\u30fc\u30eb\u306f\u3001\u9ad8\u3044\u5727\u529b\u3068\u6a5f\u68b0\u7684\u5fdc\u529b\u304c\u304b\u304b\u308b\u6cb9\u5727\u30b7\u30ea\u30f3\u30c0\u30fc\u3084\u30d8\u30d3\u30fc\u30c7\u30e5\u30fc\u30c6\u30a3\u30fc\u306a\u52d5\u7684\u7528\u9014\u306b\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002NBR\u3084FKM\u306b\u6bd4\u3079\u3001PU\u306f\u62bc\u3057\u51fa\u3057\u3084\u6469\u8017\u306b\u5bfe\u3057\u3066\u975e\u5e38\u306b\u9ad8\u3044\u8010\u6027\u3092\u793a\u3057\u3001\u9ad8\u5727\u4e0b\u3067\u306e\u5f80\u5fa9\u904b\u52d5\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n<p>PU\u306e\u4e00\u822c\u7684\u306a\u4f7f\u7528\u6e29\u5ea6\u7bc4\u56f2\u306fFKM\u3084PTFE\u3088\u308a\u3082\u72ed\u304f\u3001\u4e00\u822c\u7684\u306b\u306f-30\u2103\u304b\u3089100\u2103\u306e\u9593\u3067\u3042\u308b\u3002\u5f37\u9178\u3001\u71b1\u6c34\u3001\u7279\u5b9a\u306e\u5316\u5b66\u85ac\u54c1\u306b\u5bfe\u3059\u308b\u8010\u6027\u306f\u9650\u3089\u308c\u3066\u3044\u308b\u3002\u5f93\u3063\u3066\u3001PU\u306f\u3001\u6a5f\u68b0\u7684\u306a\u8981\u6c42\u306f\u9ad8\u3044\u304c\u3001\u5316\u5b66\u7684\u306b\u7a4f\u3084\u304b\u306a\u74b0\u5883\u3067\u6700\u3082\u9069\u3057\u3066\u3044\u308b\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6bd4\u8f03\u6027\u80fd\u306b\u95a2\u3059\u308b\u8003\u5bdf<\/h2>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6750\u6599\u3092\u6bd4\u8f03\u3059\u308b\u5834\u5408\u3001\u7279\u5b9a\u306e\u7528\u9014\u306b\u304a\u3051\u308b\u4e3b\u8981\u306a\u6545\u969c\u30ea\u30b9\u30af\u306b\u57fa\u3065\u3044\u3066\u9078\u629e\u3059\u3079\u304d\u3067\u3042\u308b\uff1a<\/p>\n\n\n\n<p>\u9069\u5ea6\u306a\u6e29\u5ea6\u3067\u306e\u8010\u6cb9\u6027\u3068\u30b3\u30b9\u30c8\u52b9\u7387\u3092\u7b2c\u4e00\u306b\u8003\u3048\u308b\u306e\u3067\u3042\u308c\u3070\u3001NBR\u3067\u5341\u5206\u306a\u5834\u5408\u304c\u591a\u3044\u3002.<\/p>\n\n\n\n<p>\u30b7\u30b9\u30c6\u30e0\u304c\u9ad8\u6e29\u307e\u305f\u306f\u5316\u5b66\u7684\u306b\u653b\u6483\u7684\u306a\u5a92\u4f53\u4e2d\u3067\u4f5c\u52d5\u3059\u308b\u5834\u5408\u3001FKM\u306f\u512a\u308c\u305f\u71b1\u5b89\u5b9a\u6027\u3068\u5316\u5b66\u7684\u5b89\u5b9a\u6027\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u4f4e\u6469\u64e6\u3001\u5e83\u3044\u6e29\u5ea6\u8010\u6027\u3001\u6975\u7aef\u306a\u8010\u85ac\u54c1\u6027\u304c\u8981\u6c42\u3055\u308c\u308b\u5834\u5408\u3001\u7279\u306b\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u306a\u56de\u8ee2\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u4e00\u822c\u7684\u306bPTFE\u304c\u597d\u307e\u3057\u3044\u9078\u629e\u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u9ad8\u5727\u3001\u885d\u6483\u8377\u91cd\u3001\u6fc0\u3057\u3044\u6469\u8017\u3092\u4f34\u3046\u7528\u9014\u306e\u5834\u5408\u3001PU\u306f\u512a\u308c\u305f\u6a5f\u68b0\u7684\u8010\u4e45\u6027\u3092\u767a\u63ee\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u306e\u9078\u629e\u6226\u7565<\/h2>\n\n\n\n<p>\u52b9\u679c\u7684\u306a\u30ab\u30b9\u30bf\u30e0\u30b7\u30fc\u30eb\u306e\u8a2d\u8a08\u306b\u306f\u3001\u5316\u5b66\u7684\u9069\u5408\u6027\u3001\u6e29\u5ea6\u5b89\u5b9a\u6027\u3001\u6a5f\u68b0\u7684\u5f37\u5ea6\u3001\u30b3\u30b9\u30c8\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f\u3001\u6750\u6599\u9078\u5b9a\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b5\u30dd\u30fc\u30c8\u304c\u5fc5\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<p>\u5316\u5b66\u7269\u8cea\u9069\u5408\u6027\u30c1\u30e3\u30fc\u30c8<br>\u6e29\u5ea6\u3068\u5727\u529b\u306e\u5206\u6790<br>\u52d5\u7684\u30b7\u30fc\u30ea\u30f3\u30b0\u8a55\u4fa1\u3068\u9759\u7684\u30b7\u30fc\u30ea\u30f3\u30b0\u8a55\u4fa1<br>\u5727\u7e2e\u30bb\u30c3\u30c8\u306e\u8a55\u4fa1<br>\u62bc\u51fa\u30ae\u30e3\u30c3\u30d7\u5206\u6790<\/p>\n\n\n\n<p>\u591a\u304f\u306e\u5148\u9032\u7684\u306a\u30b7\u30fc\u30ea\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001PTFE\u647a\u52d5\u7d20\u5b50\u3068\u30a8\u30e9\u30b9\u30c8\u30de\u30fc\u901a\u96fb\u7d20\u5b50\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u308a\u3001\u62bc\u3057\u51fa\u3057\u3092\u9632\u3050\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30ea\u30f3\u30b0\u3092\u7d44\u307f\u8fbc\u3093\u3060\u308a\u3059\u308b\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u8a2d\u8a08\u304c\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u3002\u3053\u306e\u3088\u3046\u306a\u5de5\u5b66\u7684\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u6750\u6599\u306e\u9078\u629e\u304c\u69cb\u9020\u8a2d\u8a08\u304b\u3089\u5207\u308a\u96e2\u3055\u308c\u308b\u3053\u3068\u304c\u307b\u3068\u3093\u3069\u306a\u3044\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u308b\u3002.<\/p>\n\n\n\n<h2 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Material selection in custom sealing engineering is a multidisciplinary decision involving polymer chemistry, tribology, thermodynamics, and mechanical design. Seals operate under combined influences of pressure, temperature, chemical exposure, and dynamic motion. A mismatch between material properties and operating conditions often results in leakage, extrusion, compression set, chemical degradation, or accelerated wear. Among industrial sealing materials, NBR (Nitrile Butadiene Rubber), FKM (Fluoroelastomer), PTFE (Polytetrafluoroethylene), and PU (Polyurethane) represent four of the most commonly specified options. Although these materials may appear interchangeable in low-demand applications, their molecular structure and physical properties differ significantly. This article provides a structured technical comparison to support evidence-based material selection in custom seal design. NBR (Nitrile [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[1307,1697,1709,1699,1706,1707,1705,1393,1236,1006,1701,1698,1696,1702,1703,63,1704,1708,1700],"class_list":["post-1955","post","type-post","status-publish","format-standard","hentry","category-industry-insights","tag-chemical-resistant-seals-2","tag-compression-set-analysis","tag-custom-industrial-seals","tag-custom-sealing-materials","tag-dynamic-sealing-systems","tag-fluoroelastomer-properties","tag-high-pressure-hydraulic-seals","tag-high-temperature-sealing-materials","tag-hydraulic-seal-material-selection","tag-industrial-sealing-solutions","tag-low-friction-sealing-materials","tag-mechanical-seal-engineering","tag-nbr-vs-fkm-comparison","tag-oil-resistant-rubber-seals","tag-polymer-sealing-performance","tag-polyurethane-seals","tag-ptfe-seal-applications","tag-seal-material-compatibility","tag-static-sealing-design"],"_links":{"self":[{"href":"https:\/\/www.wonzh.com\/ja\/wp-json\/wp\/v2\/posts\/1955","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wonzh.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wonzh.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wonzh.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wonzh.com\/ja\/wp-json\/wp\/v2\/comments?post=1955"}],"version-history":[{"count":1,"href":"https:\/\/www.wonzh.com\/ja\/wp-json\/wp\/v2\/posts\/1955\/revisions"}],"predecessor-version":[{"id":1956,"href":"https:\/\/www.wonzh.com\/ja\/wp-json\/wp\/v2\/posts\/1955\/revisions\/1956"}],"wp:attachment":[{"href":"https:\/\/www.wonzh.com\/ja\/wp-json\/wp\/v2\/media?parent=1955"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wonzh.com\/ja\/wp-json\/wp\/v2\/categories?post=1955"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wonzh.com\/ja\/wp-json\/wp\/v2\/tags?post=1955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}