{"id":7312,"date":"2026-10-24T18:27:38","date_gmt":"2026-10-24T17:27:38","guid":{"rendered":"https:\/\/uplastech.com\/nbr-nitrile-rubber\/"},"modified":"2026-10-25T04:34:09","modified_gmt":"2026-10-25T04:34:09","slug":"nbr-nitrile-rubber","status":"publish","type":"page","link":"https:\/\/uplastech.com\/ja\/nbr-nitrile-rubber\/","title":{"rendered":"Custom NBR Nitrile Rubber Moulding"},"content":{"rendered":"<style>\n.upl-page{font-size:17px;line-height:1.78;color:#1f2937}\n.upl-page p{margin:0 0 18px}\n.upl-page h1{font-size:38px;line-height:1.16;letter-spacing:-.025em;color:#0b2b33;margin:0 0 18px;font-weight:800}\n.upl-page h2{font-size:26px;line-height:1.3;color:#0b2b33;margin:48px 0 14px;font-weight:700;letter-spacing:-.015em}\n.upl-page h3{font-size:19px;color:#0d3b47;margin:26px 0 10px;font-weight:700}\n.upl-page ul,.upl-page ol{margin:0 0 20px;padding-left:22px}\n.upl-page li{margin:0 0 9px}\n.upl-page .lead{font-size:19px;line-height:1.65;color:#4b5563;margin:0 0 36px}\n.upl-page a{color:#0d6b7d}\n.upl-page strong{color:#0b2b33}\n.upl-page .sec-note{font-size:13px;color:#6b7280;margin:-4px 0 26px}\n.upl-page .stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin:0 0 20px}\n.upl-page .stat{background:#f7fafb;border:1px solid #e3ebee;border-left:3px solid #14707f;border-radius:8px;padding:16px 20px}\n.upl-page .stat b{display:block;font-size:24px;line-height:1.2;color:#0b2b33;letter-spacing:-.02em;margin-bottom:4px}\n.upl-page .stat span{font-size:12.5px;color:#6b7280;letter-spacing:.04em;text-transform:uppercase;font-weight:600}\n.upl-page .prod-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:26px;margin:0 0 16px}\n.upl-page .prod{background:#fff;border:1px solid #e6ebed;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;scroll-margin-top:96px}\n.upl-page .prod img{width:100%;height:198px;object-fit:cover;display:block;background:#f2f5f6}\n.upl-page .prod .txt{padding:17px 20px 21px;flex:1}\n.upl-page .prod h3{margin:0 0 8px;font-size:17.5px;line-height:1.35;color:#0b2b33}\n.upl-page .prod p{margin:0;font-size:14.5px;color:#5b666b;line-height:1.62}\n.upl-page table{width:100%;border-collapse:collapse;font-size:14.5px;margin:0 0 10px}\n.upl-page th{background:#0d3b47;color:#fff;text-align:left;padding:11px 13px;font-weight:600;font-size:13.5px;border:0}\n.upl-page td{padding:11px 13px;border:0;border-bottom:1px solid #e8ebed;vertical-align:top}\n.upl-page tbody tr:nth-child(even){background:#fafbfc}\n.upl-page .tablecap{font-size:12.5px;color:#6b7280;margin:0 0 30px}\n.upl-page .callout{background:#f2f8f9;border-radius:8px;padding:18px 22px;margin:0 0 26px;font-size:15.5px;border-left:3px solid #14707f}\n.upl-page .faq h3{border-top:1px solid #eceff1;padding-top:22px;margin-top:0;font-size:18px}\n.upl-page .faq h3:first-of-type{border-top:0;padding-top:0}\n.upl-page .cta{background:linear-gradient(135deg,#0b2b33,#0d5563);color:#fff;border-radius:12px;padding:36px;margin:52px 0 20px}\n.upl-page .cta h2{color:#fff;margin:0 0 10px;font-size:25px}\n.upl-page .cta p{color:#c9dee3;margin:0 0 22px;font-size:16px}\n.upl-page .btn{display:inline-block;background:#e07a1f;color:#fff;text-decoration:none;font-weight:700;padding:13px 26px;border-radius:8px;font-size:15.5px}\n@media(max-width:640px){.upl-page h1{font-size:28px}.upl-page h2{font-size:22px}.upl-page .prod img{height:180px}.upl-page table{font-size:13px}}\n<\/style>\n<div class=\"upl-page\">\n<p class=\"lead\">NBR is the workhorse oil seal material. It resists mineral oils, greases, hydraulic fluids and aliphatic hydrocarbons, moulds easily, and costs a fraction of FKM \u2014 which is why the majority of O-rings, shaft seals and fuel lines in general industrial service are nitrile. Its weakness is weather: NBR degrades in ozone and UV, so outdoor applications need a protective compound or a different polymer.<\/p>\n<p>  <img decoding=\"async\" src=\"https:\/\/uplastech.com\/wp-content\/uploads\/2026\/10\/nbr-o-rings.jpg\" alt=\"Custom NBR Nitrile Rubber Moulding \u2014 O-rings and rotary shaft seals\" style=\"width:100%;border-radius:12px;margin:0 0 30px\"><\/p>\n<div class=\"stats\">\n<div class=\"stat\"><b>40 \u2013 90 Shore A<\/b><span>Hardness range<\/span><\/div>\n<div class=\"stat\"><b>-40 to +120 \u00b0C<\/b><span>Service temperature<\/span><\/div>\n<div class=\"stat\"><b>7 \u2013 15 MPa<\/b><span>Tensile strength<\/span><\/div>\n<\/p><\/div>\n<p class=\"sec-note\">Typical values for standard moulding grades. Exact figures depend on the specific compound or grade \u2014 confirm against your drawing before quoting.<\/p>\n<h2>Key properties<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u30d7\u30ed\u30d1\u30c6\u30a3<\/th>\n<th>Typical value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Hardness range<\/td>\n<td>40 \u2013 90 Shore A<\/td>\n<\/tr>\n<tr>\n<td>Service temperature<\/td>\n<td>-40 to +120 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Tensile strength<\/td>\n<td>7 \u2013 15 MPa<\/td>\n<\/tr>\n<tr>\n<td>Elongation at break<\/td>\n<td>200 \u2013 500 %<\/td>\n<\/tr>\n<tr>\n<td>Compression set (22 h \/ 100 \u00b0C)<\/td>\n<td>15 \u2013 30 %<\/td>\n<\/tr>\n<tr>\n<td>Oil resistance<\/td>\n<td>Excellent in mineral oils and greases<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"tablecap\">Values are typical for unfilled moulding grades at 23 \u00b0C unless stated. Glass-filled and specialty grades differ.<\/p>\n<h2>Typical applications<\/h2>\n<ul>\n<li>O-rings and rotary shaft seals<\/li>\n<li>Hydraulic and pneumatic seals<\/li>\n<li>Fuel and oil hoses<\/li>\n<li>Gaskets for gearboxes and pumps<\/li>\n<li>Rollers and industrial moulded goods<\/li>\n<\/ul>\n<h2>Processing notes<\/h2>\n<ul>\n<li>Acrylonitrile content decides the balance: higher ACN means better oil resistance but worse low-temperature flexibility. Specify the service temperature and we will pick the grade.<\/li>\n<li>NBR is not suitable for outdoor exposure without protection. Ozone attack shows as surface cracking within months.<\/li>\n<li>Poor resistance to ketones, esters, ethers and strong acids. Confirm the media.<\/li>\n<li>Sulphur-cured NBR is standard; peroxide-cured gives better set resistance and heat ageing at higher cost.<\/li>\n<\/ul>\n<div class=\"callout\">\n    <strong>Tooling, not just material.<\/strong> Every material above behaves differently in the tool \u2014 shrinkage, gate position, cooling and ejection all change. We review the DFM against the specific grade before the tool is cut, so the first shot is a sample, not a surprise.\n  <\/div>\n<div class=\"faq\">\n<h2>Frequently asked questions<\/h2>\n<h3>What ACN content do I need?<\/h3>\n<p>Around 34 % for general oil service, 40 % and above for aggressive oils and higher temperatures, and 28 % or lower when flexibility below -40 \u00b0C matters more than oil resistance. Give us the fluid and the temperature and we will specify.<\/p>\n<h3>NBR or HNBR?<\/h3>\n<p>NBR for service to 120 \u00b0C in clean oil. HNBR when the same oil runs hotter, or when ozone and ageing resistance matter \u2014 it is the same chemistry with the double bonds hydrogenated out.<\/p>\n<\/p><\/div>\n<h2>Related materials<\/h2>\n<ul class=\"related\">\n<li><a href=\"\/ja\/vmq-silicone-rubber\/\">Silicone Rubber (VMQ) Moulding<\/a><\/li>\n<li><a href=\"\/ja\/fvmq-fluorosilicone-rubber\/\">FVMQ Fluorosilicone Rubber Moulding<\/a><\/li>\n<li><a href=\"\/ja\/fkm-fluorocarbon-rubber\/\">FKM Fluorocarbon Rubber Moulding<\/a><\/li>\n<li><a href=\"\/ja\/ffkm-perfluoroelastomer\/\">FFKM Perfluoroelastomer Moulding<\/a><\/li>\n<li><a href=\"\/ja\/epdm-rubber-molding\/\">EPDM Rubber Moulding<\/a><\/li>\n<li><a href=\"\/ja\/hnbr-hydrogenated-nitrile-rubber\/\">HNBR Hydrogenated Nitrile Rubber Moulding<\/a><\/li>\n<\/ul>\n<p><a href=\"\/ja\/silicone-rubber\/\">\u2190 All Silicone &amp; Rubber Solutions<\/a><\/p>\n<div class=\"cta\">\n<h2>Send us your NBR Nitrile Rubber drawing<\/h2>\n<p>Upload a 3D model or a 2D drawing and we will come back with a DFM review, a tooling cost and a piece price \u2014 usually within two working days.<\/p>\n<p>    <a class=\"btn\" href=\"\/ja\/%e3%82%b3%e3%83%b3%e3%82%bf%e3%82%af%e3%83%88\/\">Request a quote<\/a>\n  <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>NBR is the workhorse oil seal material. It resists mineral oils, greases, hydraulic fluids and aliphatic hydrocarbons, moulds easily, and costs a fraction of FKM \u2014 which is why the majority of O-rings, shaft seals and fuel lines in general industrial service are nitrile. Its weakness is weather: NBR degrades in ozone and UV, so outdoor applications need a protective compound or a different polymer. 40 \u2013 90 Shore AHardness range -40 to +120 \u00b0CService temperature 7 \u2013 15 MPaTensile strength Typical values for standard moulding grades. Exact figures depend on the specific compound or grade \u2014 confirm against your drawing before quoting. Key properties Property Typical value Hardness range [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_titles_title":"Custom NBR Nitrile Rubber Moulding | Uplastech","_seopress_titles_desc":"Custom NBR nitrile rubber parts with excellent resistance to mineral oils, greases and fuels. -40 to +120 \u00b0C, the standard choice for oil seals.","_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":"","footnotes":""},"class_list":["post-7312","page","type-page","status-publish","hentry"],"meta_box":[],"_links":{"self":[{"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/pages\/7312","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/comments?post=7312"}],"version-history":[{"count":1,"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/pages\/7312\/revisions"}],"predecessor-version":[{"id":7371,"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/pages\/7312\/revisions\/7371"}],"wp:attachment":[{"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/media?parent=7312"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}