{"product_id":"a-4520-hcra","title":"Elkem Silicone HCRA 4520 20A (HCR) High Consistency Rubber (A-4520-HCRA)","description":"\u003cp\u003e\u003cstrong\u003eA-4520-HCRA Silicone Gum (Heat Cure HCR, Shore A 20)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA-4520-HCRA\u003c\/strong\u003e is a \u003cstrong\u003eplatinum-cure, high consistency rubber (HCR) silicone gum\u003c\/strong\u003e offering a \u003cstrong\u003esoft, highly flexible elastomer\u003c\/strong\u003e with excellent physical properties. With a \u003cstrong\u003eShore A 20 durometer\u003c\/strong\u003e, it is the softest option in the HCRA series, making it ideal for applications requiring \u003cstrong\u003emaximum flexibility and comfort\u003c\/strong\u003e while maintaining durability.\u003c\/p\u003e\n\u003cp\u003eSupplied in a \u003cstrong\u003egum form\u003c\/strong\u003e, this material allows technicians to \u003cstrong\u003esculpt, shape, and laminate directly into the silicone\u003c\/strong\u003e prior to cure. It is \u003cstrong\u003edimensionally stable with minimal shrinkage\u003c\/strong\u003e and bonds well to a variety of substrates, supporting a wide range of fabrication techniques.\u003c\/p\u003e\n\u003cp\u003eThe material provides a \u003cstrong\u003eworking time of up to 2 hours\u003c\/strong\u003e (at ~65°F), allowing time for processing and detailing. Final cure is achieved through \u003cstrong\u003eheat\u003c\/strong\u003e, resulting in a resilient, elastic finished product.\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 20 silicone gum\u003c\/strong\u003e for maximum flexibility\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\u003evarious substrates\u003c\/strong\u003e for lamination\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\u003esoft, flexible elastomers\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 ~20 (range 15–25)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTensile Strength:\u003c\/strong\u003e up to ~800 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 ~190 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 soft, high-performance HCR silicone designed for \u003cstrong\u003eapplications requiring flexibility, comfort, and reliable mechanical performance\u003c\/strong\u003e.\u003c\/p\u003e","brand":"factor2inc","offers":[{"title":"4 LB Kit, 2 Pounds of A \u0026 2 Pounds of B","offer_id":45500890906822,"sku":"A-4520-HCRA","price":96.95,"currency_code":"USD","in_stock":false},{"title":"44 LB Kit  22 Pounds A \u0026 22 Pounds B","offer_id":45500890939590,"sku":"A-4520-44-HCRA","price":857.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/5572\/2182\/files\/A-4520-HCRA-2_d5bc2a8b-87ed-438c-b38b-3df589b35fb0.jpg?v=1770073948","url":"https:\/\/factor2inc.myshopify.com\/en-mx\/products\/a-4520-hcra","provider":"Factor II Inc.","version":"1.0","type":"link"}