{"id":43310,"date":"2026-10-09T10:35:43","date_gmt":"2026-10-09T08:35:43","guid":{"rendered":"https:\/\/www.finres-sa.com\/product\/shore-90a-high-strength-polyurethane-elastomer-for-technical-industrial-parts-pmc-790-1-35kg-kit\/"},"modified":"2026-10-09T11:08:53","modified_gmt":"2026-10-09T09:08:53","slug":"shore-90a-high-strength-polyurethane-elastomer-for-technical-industrial-parts-pmc-790-1-35kg-kit","status":"publish","type":"product","link":"https:\/\/www.finres-sa.com\/en\/product\/shore-90a-high-strength-polyurethane-elastomer-for-technical-industrial-parts-pmc-790-1-35kg-kit\/","title":{"rendered":"Shore 90A high-strength polyurethane elastomer for technical &#038; industrial parts &#8211; PMC\u2122-790 &#8211; 1.35kg kit"},"content":{"rendered":"<div class=\"product\"><div class=\"product\">\t\t<div data-elementor-type=\"product-post\" data-elementor-id=\"43310\" class=\"elementor elementor-43310 elementor-43243\" data-elementor-post-type=\"product\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7ce6aa0 e-flex e-con-boxed e-con e-parent\" data-id=\"7ce6aa0\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cc6700c elementor-widget elementor-widget-text-editor\" data-id=\"cc6700c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>PMC\u2122-790 is a Shore 90A industrial polyurethane elastomer designed to produce very hard, strong, and durable parts. It offers excellent tensile strength, tear resistance, impact resistance, and abrasion resistance. <\/p><p>It is particularly suited to industrial rollers, wheels, guide rollers, belts, mechanical parts, wear-resistant protections, and other components subjected to repeated friction or stress.<\/p><p>Despite its high hardness, PMC\u2122-790 remains a true elastomer: it retains good deformation capacity with an elongation at break of up to 550%. Its very low shrinkage also enables precise, dimensionally stable parts to be produced. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f9b4f98 e-flex e-con-boxed e-con e-parent\" data-id=\"f9b4f98\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[],&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-88516ba e-grid e-con-boxed e-con e-child\" data-id=\"88516ba\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-4c419d8 e-con-full e-flex e-con e-child\" data-id=\"4c419d8\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5663442 elementor-widget elementor-widget-heading\" data-id=\"5663442\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">Applications <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c5f59a elementor-widget elementor-widget-text-editor\" data-id=\"3c5f59a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Industrial wheels, rollers, and castors<\/li><li>Conveyor rollers and components<\/li><li>Pulleys and drive parts<\/li><li>Bushings, bearings, pads, and wear parts<\/li><li>Buffers, stops, and impact protections<\/li><li>Abrasion-resistant coatings and protections<\/li><li>Heavily stressed elastomer mechanical parts<\/li><li>Durable moulds and dies for concrete and prefabrication<\/li><li>Polyurethane coatings and parts on metal substrates<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b3dd046 e-con-full e-flex e-con e-child\" data-id=\"b3dd046\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9fd5b0d elementor-widget elementor-widget-heading\" data-id=\"9fd5b0d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">Advantages <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ad0768 elementor-widget elementor-widget-text-editor\" data-id=\"2ad0768\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Very high hardness: Shore 90A<\/li><li>Excellent abrasion resistance<\/li><li>High tear resistance<\/li><li>Very good impact resistance<\/li><li>Elongation up to 550%<\/li><li>Very low shrinkage<\/li><li>Good dimensional stability<\/li><li>Suited to intensive industrial applications<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9371fea e-flex e-con-boxed e-con e-parent\" data-id=\"9371fea\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[],&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-298d75f elementor-widget elementor-widget-heading\" data-id=\"298d75f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">Application Instructions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b70c65 elementor-widget elementor-widget-text-editor\" data-id=\"3b70c65\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol><li>Prepare a clean, dry, and properly released mould.<\/li><li>Pre-mix component B.<\/li><li>Measure A and B at 2:1 by weight or volume.<\/li><li>Mix thoroughly for approximately 3 minutes, scraping the sides and bottom.<\/li><li>Degas under vacuum if necessary to obtain bubble-free parts.<\/li><li>Pour slowly at the lowest point of the mould.<\/li><li>Allow to cure for 48 h at approximately 23 \u00b0C before demoulding.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-50ce907 e-flex e-con-boxed e-con e-parent\" data-id=\"50ce907\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[],&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-e83d8d6 e-con-full e-flex e-con e-child\" data-id=\"e83d8d6\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fee5bcc elementor-widget elementor-widget-heading\" data-id=\"fee5bcc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">Technical specifications<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d26e36 elementor-widget elementor-widget-text-editor\" data-id=\"5d26e36\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Hardness (Shore A): <strong>90<\/strong><\/p><p>Ratio A:B: <strong>2:1<\/strong><\/p><p>Working time (min): <strong>20<\/strong><\/p><p>Demould time (h at 23 \u00b0C): <strong>48<\/strong><\/p><p>Viscosity (cP): <strong>3000<\/strong><\/p><p>Density (g\/cm\u00b3): <strong>1.07<\/strong><\/p><p>Elongation at break (%): <strong>550<\/strong><\/p><p>Tensile strength (psi): <strong>2000<\/strong><\/p><p>Tear strength (pli): <strong>30<\/strong><\/p><p>Shrinkage (in\/in): <strong>&lt;0.001<\/strong><\/p><p>Colour: <strong>Transparent amber<\/strong><\/p><p> <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fcf4adb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fcf4adb\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-032783b elementor-invisible\" data-id=\"032783b\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-255b95b elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"255b95b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInLeft&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQ \u2013 Frequently asked questions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-057d396 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"057d396\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0e81053 elementor-widget elementor-widget-accordion\" data-id=\"0e81053\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1521\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-1521\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Is PMC\u2122-790 flexible or rigid?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1521\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-1521\"><p>With a Shore 90A hardness, PMC\u2122-790 is a very firm elastomer. It remains elastic, however, and can achieve approximately 550% elongation at break. <\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1522\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-1522\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">What is the difference between PMC\u2122-780 and PMC\u2122-790?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1522\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-1522\"><p>PMC\u2122-790 is harder: <strong>90A versus 80A<\/strong> for PMC\u2122-780. It also has higher tensile and tear strength, whilst PMC\u2122-780 remains more flexible. <\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1523\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-1523\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Does PMC\u2122-790 resist abrasion and impact?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1523\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-1523\"><p>Yes. It is specially designed for industrial applications requiring excellent resistance to abrasion, impact, tension, and tearing. <\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1524\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-1524\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Does PMC\u2122-790 need to be degassed?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1524\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-1524\"><p>Not necessarily, but vacuum degassing further reduces trapped air. Pressure casting can produce parts practically free of bubbles. <\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1525\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"button\" aria-controls=\"elementor-tab-content-1525\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Why is my PMC\u2122-790 foaming or producing bubbles?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1525\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"region\" aria-labelledby=\"elementor-tab-title-1525\"><p>Polyurethanes are sensitive to moisture. Tools, containers, fillers, and substrates must be perfectly dry, and packaging resealed quickly after use. <\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1526\" class=\"elementor-tab-title\" data-tab=\"6\" role=\"button\" aria-controls=\"elementor-tab-content-1526\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Can its performance be improved after curing?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1526\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"6\" role=\"region\" aria-labelledby=\"elementor-tab-title-1526\"><p>Yes. After curing at room temperature, post-curing at <strong>65 \u00b0C for 4 to 8 hours<\/strong> improves its physical properties and performance. <\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Is PMC\\u2122-790 flexible or rigid?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>With a Shore 90A hardness, PMC\\u2122-790 is a very firm elastomer. It remains elastic, however, and can achieve approximately 550% elongation at break. <\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between PMC\\u2122-780 and PMC\\u2122-790?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>PMC\\u2122-790 is harder: <strong>90A versus 80A<\\\/strong> for PMC\\u2122-780. 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Tools, containers, fillers, and substrates must be perfectly dry, and packaging resealed quickly after use. <\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"Can its performance be improved after curing?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Yes. After curing at room temperature, post-curing at <strong>65 \\u00b0C for 4 to 8 hours<\\\/strong> improves its physical properties and performance. <\\\/p>\\n\"}}]}<\/script>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Very hard Shore 90A polyurethane elastomer designed for heavily stressed technical parts. Excellent resistance to abrasion, impact, and tearing. Ideal for rollers, wheels, wear parts, and industrial components.  <\/p>\n<p>&nbsp;<\/p>\n","protected":false},"featured_media":43266,"template":"","meta":[],"product_brand":[],"product_cat":[1002,357,2024],"product_tag":[],"class_list":["post-43310","product","type-product","status-publish","has-post-thumbnail","product_cat-news","product_cat-polyurethane-en","product_cat-polyurethane-elastomer","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.finres-sa.com\/en\/wp-json\/wp\/v2\/product\/43310","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.finres-sa.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.finres-sa.com\/en\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":1,"href":"https:\/\/www.finres-sa.com\/en\/wp-json\/wp\/v2\/product\/43310\/revisions"}],"predecessor-version":[{"id":43311,"href":"https:\/\/www.finres-sa.com\/en\/wp-json\/wp\/v2\/product\/43310\/revisions\/43311"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.finres-sa.com\/en\/wp-json\/wp\/v2\/media\/43266"}],"wp:attachment":[{"href":"https:\/\/www.finres-sa.com\/en\/wp-json\/wp\/v2\/media?parent=43310"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.finres-sa.com\/en\/wp-json\/wp\/v2\/product_brand?post=43310"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.finres-sa.com\/en\/wp-json\/wp\/v2\/product_cat?post=43310"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.finres-sa.com\/en\/wp-json\/wp\/v2\/product_tag?post=43310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}