{"product_id":"a-4550-hcra","title":"Elkem Silicone HCRA 4550 50A (HCR) High Consistency Rubber (A-4550-HCRA)","description":"\u003cp\u003e\u003cstrong\u003eA-4550-HCRA Silicone Gum (Heat Cure HCR, Shore A 50)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA-4550-HCRA\u003c\/strong\u003e is a \u003cstrong\u003eplatinum-cure, high consistency rubber (HCR) silicone gum\u003c\/strong\u003e offering an excellent balance of \u003cstrong\u003estrength, flexibility, and workability\u003c\/strong\u003e. With a \u003cstrong\u003eShore A 50 durometer\u003c\/strong\u003e, it provides a slightly softer alternative within the HCRA series while maintaining strong mechanical performance and durability.\u003c\/p\u003e\n\u003cp\u003eHCR silicones are supplied in a \u003cstrong\u003egum form\u003c\/strong\u003e, allowing technicians to \u003cstrong\u003esculpt, shape, and laminate directly into the material\u003c\/strong\u003e prior to cure. This makes them ideal for applications requiring hands-on fabrication and precise control.\u003c\/p\u003e\n\u003cp\u003eThe material is \u003cstrong\u003edimensionally stable with minimal shrinkage\u003c\/strong\u003e and bonds well to a variety of substrates. It also features an extended \u003cstrong\u003eworking time of up to 6 hours\u003c\/strong\u003e (at ~65°F), allowing ample time for processing before cure. Final curing is achieved through \u003cstrong\u003eheat\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShore A 50 silicone gum\u003c\/strong\u003e for balanced flexibility and strength\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePlatinum-cure (addition cure) system\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh consistency (gum) form\u003c\/strong\u003e for sculpting and shaping\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExcellent mechanical properties\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLow to no shrinkage\u003c\/strong\u003e for dimensional stability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBonds well to \u003cstrong\u003emultiple substrates\u003c\/strong\u003e for lamination\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLong working time (~6 hours at 65°F)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHeat cure required\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eProcessing Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSupplied as a \u003cstrong\u003etwo-part system (Part A \u0026amp; Part B)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMix \u003cstrong\u003eequal parts thoroughly\u003c\/strong\u003e prior to use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTwo-roll mill required\u003c\/strong\u003e for proper blending and pigment incorporation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSculpted silicone components\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLaminated silicone structures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApplications requiring \u003cstrong\u003edurability with added flexibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Properties (Typical)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDurometer (Shore A):\u003c\/strong\u003e ~50 (range 45–55)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTensile Strength:\u003c\/strong\u003e up to ~1900 psi\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eElongation:\u003c\/strong\u003e up to ~1000%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTear Strength:\u003c\/strong\u003e up to ~320 lb\/in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAppearance:\u003c\/strong\u003e Clear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA versatile HCR silicone designed for \u003cstrong\u003efabrication, sculpting, and applications requiring a balance of strength and flexibility\u003c\/strong\u003e.\u003c\/p\u003e","brand":"factor2inc","offers":[{"title":"4 LB Kit, 2 Pounds of A \u0026 2 Pounds of B","offer_id":45500891037894,"sku":"A-4550-HCRA","price":96.95,"currency_code":"USD","in_stock":true},{"title":"44 LB Kit  22 Pounds A \u0026 22 Pounds B","offer_id":45500891070662,"sku":"A-4550-44-HCRA","price":857.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/5572\/2182\/files\/A-4550-HCRA-2_809d0a8a-3653-46e6-b45e-ce31d8fa3263.jpg?v=1770073973","url":"https:\/\/factor2inc.myshopify.com\/products\/a-4550-hcra","provider":"Factor II Inc.","version":"1.0","type":"link"}