{"id":7310,"date":"2026-10-24T18:27:32","date_gmt":"2026-10-24T17:27:32","guid":{"rendered":"https:\/\/uplastech.com\/hnbr-hydrogenated-nitrile-rubber\/"},"modified":"2026-10-25T04:34:05","modified_gmt":"2026-10-25T04:34:05","slug":"hnbr-hydrogenated-nitrile-rubber","status":"publish","type":"page","link":"https:\/\/uplastech.com\/ja\/hnbr-hydrogenated-nitrile-rubber\/","title":{"rendered":"Custom HNBR Hydrogenated 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\">HNBR is NBR with the double bonds removed by hydrogenation. The oil resistance stays, but heat resistance climbs from 120 \u00b0C to 150 \u00b0C, ozone attack effectively disappears, and mechanical strength improves \u2014 which is why timing belts, air-conditioning seals and oilfield packers moved to HNBR. It costs roughly two to three times NBR, so it is specified where the extra temperature margin is worth paying for.<\/p>\n<p>  <img decoding=\"async\" src=\"https:\/\/uplastech.com\/wp-content\/uploads\/2026\/10\/hnbr-seals.jpg\" alt=\"Custom HNBR Hydrogenated Nitrile Rubber Moulding \u2014 Automotive timing and drive belts\" style=\"width:100%;border-radius:12px;margin:0 0 30px\"><\/p>\n<div class=\"stats\">\n<div class=\"stat\"><b>50 \u2013 90 Shore A<\/b><span>Hardness range<\/span><\/div>\n<div class=\"stat\"><b>-40 to +150 \u00b0C<\/b><span>Service temperature<\/span><\/div>\n<div class=\"stat\"><b>15 \u2013 25 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>50 \u2013 90 Shore A<\/td>\n<\/tr>\n<tr>\n<td>Service temperature<\/td>\n<td>-40 to +150 \u00b0C (+160 \u00b0C short term)<\/td>\n<\/tr>\n<tr>\n<td>Tensile strength<\/td>\n<td>15 \u2013 25 MPa<\/td>\n<\/tr>\n<tr>\n<td>Elongation at break<\/td>\n<td>200 \u2013 450 %<\/td>\n<\/tr>\n<tr>\n<td>Compression set (22 h \/ 150 \u00b0C)<\/td>\n<td>15 \u2013 25 %<\/td>\n<\/tr>\n<tr>\n<td>Ozone resistance<\/td>\n<td>Excellent \u2014 no surface cracking<\/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>Automotive timing and drive belts<\/li>\n<li>Air-conditioning system seals<\/li>\n<li>Oilfield packers and downhole seals<\/li>\n<li>High-temperature hydraulic seals<\/li>\n<li>Industrial hose for hot oil service<\/li>\n<\/ul>\n<h2>Processing notes<\/h2>\n<ul>\n<li>HNBR is stiffer than NBR at the same hardness. Where a soft, conformable seal is needed, specify the hardness carefully and expect a longer cycle.<\/li>\n<li>Peroxide curing is normal for HNBR and gives the best set resistance. Sulphur-cured grades exist but are a niche.<\/li>\n<li>Still not suitable for ketones, esters or strong acids \u2014 hydrogenation improves ageing, not the fundamental polarity of the polymer.<\/li>\n<li>Price is the main barrier. If service temperature stays under 110 \u00b0C, standard NBR is the rational choice.<\/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>When is HNBR worth the extra cost over NBR?<\/h3>\n<p>When service temperature exceeds about 110 \u00b0C, when ozone or weathering is present, or when the part must survive years of flexing in hot oil \u2014 timing belts are the classic case.<\/p>\n<h3>Can HNBR replace FKM?<\/h3>\n<p>Only below about 150 \u00b0C. Above that FKM wins on temperature and chemical resistance. HNBR wins on low-temperature flexibility and on cost below 150 \u00b0C.<\/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\/nbr-nitrile-rubber\/\">NBR 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 HNBR Hydrogenated 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>HNBR is NBR with the double bonds removed by hydrogenation. The oil resistance stays, but heat resistance climbs from 120 \u00b0C to 150 \u00b0C, ozone attack effectively disappears, and mechanical strength improves \u2014 which is why timing belts, air-conditioning seals and oilfield packers moved to HNBR. It costs roughly two to three times NBR, so it is specified where the extra temperature margin is worth paying for. 50 \u2013 90 Shore AHardness range -40 to +150 \u00b0CService temperature 15 \u2013 25 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 [&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 HNBR Rubber Moulding | Uplastech","_seopress_titles_desc":"Custom HNBR parts with NBR's oil resistance plus heat resistance to 150 \u00b0C and far better ozone and ageing performance. For demanding automotive and oilfield 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-7310","page","type-page","status-publish","hentry"],"meta_box":[],"_links":{"self":[{"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/pages\/7310","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=7310"}],"version-history":[{"count":1,"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/pages\/7310\/revisions"}],"predecessor-version":[{"id":7370,"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/pages\/7310\/revisions\/7370"}],"wp:attachment":[{"href":"https:\/\/uplastech.com\/ja\/wp-json\/wp\/v2\/media?parent=7310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}