{"product_id":"siliconen-additie-kleurloos-50-hard","title":"Silicone Addition Colourless 50 – Hard Platinum Silicone for Concrete \u0026 Heavy Casting Materials","description":"\u003ch2\u003ePremium Hard Silicone for Professional Moulds and Heavy-Duty Applications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSilicone Addition Colourless 50\u003c\/strong\u003e is a 2-component, platinum-cure (addition-cure) casting silicone with Shore A 50 hardness, specifically developed for sturdy, flexible moulds for concrete, cement and other heavy casting materials. This high-quality silicone combines high mechanical strength (8 N\/mm² tensile strength) with minimal shrinkage (\u0026lt;0.1%) and good flow properties, ideal for durable moulds that can handle high-density materials. Easy 1:1 mixing ratio and adjustable hardness by mixing with the Shore A 5 variant.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShore A 50 hardness:\u003c\/strong\u003e Relatively hard, sturdy moulds with excellent dimensional stability for heavy casting materials\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh mechanical strength:\u003c\/strong\u003e 8 N\/mm² tensile strength and 14 N\/mm tear strength for durable moulds that can withstand high pressure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for high-density materials:\u003c\/strong\u003e Ideal for concrete, cement and other heavy casting materials without deformation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlatinum-cure technology:\u003c\/strong\u003e Minimal shrinkage (\u0026lt;0.1%), no inhibition on most substrates, long mould life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGood flow and self-de-airing:\u003c\/strong\u003e 13,000 mPa·s viscosity for good detail reproduction without vacuum treatment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable hardness:\u003c\/strong\u003e Mixable with \u003ca href=\"\/en\/products\/silicone-addition-clear-5\"\u003eSilicone Addition Colourless 5\u003c\/a\u003e for any desired hardness between Shore A 5 and 50\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConcrete moulds for precast elements, WetCast and decorative concrete applications\u003c\/li\u003e\n\u003cli\u003eCement and plaster moulds for architectural ornaments and restoration\u003c\/li\u003e\n\u003cli\u003eCandle moulds for large, heavy candles and decorative wax objects\u003c\/li\u003e\n\u003cli\u003ePad printing pads and flexible printing applications where hardness is required\u003c\/li\u003e\n\u003cli\u003eIndustrial moulds for heavy casting materials and high-pressure applications\u003c\/li\u003e\n\u003cli\u003eProps and design objects where strength and flexibility are combined\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eProcessing instructions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eCarefully mix components A and B in a 100:100 ratio (1:1 by weight) by hand or mechanically\u003c\/li\u003e\n\u003cli\u003eStir slowly in a figure-of-eight motion to prevent air entrapment\u003c\/li\u003e\n\u003cli\u003eProcess the mixture within the 30-minute pot life\u003c\/li\u003e\n\u003cli\u003eWait until fully cured before demoulding (3–6 hours at 20°C)\u003c\/li\u003e\n\u003cli\u003eCuring can be accelerated by heat – every 10°C temperature increase roughly halves the time\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eCustomisation options:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjust hardness:\u003c\/strong\u003e Mix with \u003ca href=\"\/en\/products\/silicone-addition-clear-5\"\u003eSilicone Addition Colourless 5\u003c\/a\u003e for any desired hardness between Shore A 5 and 50. Example: for Shore A 18.5, mix 70% Shore 5 (35 g A + 35 g B) with 30% Shore 50 (15 g A + 15 g B)\u003c\/li\u003e\n\u003cli\u003e\u003cimg src=\"https:\/\/static.webshopapp.com\/shops\/100888\/files\/142517117\/grafiek-5-50-nl.jpg\" width=\"594\" height=\"334\"\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduce hardness:\u003c\/strong\u003e Add \u003ca href=\"\/en\/collections\/siliconen-olie-polydimethylsiloxanen-olie\"\u003esilicone oil\u003c\/a\u003e (note: migrates to the surface over time)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThicken for spreading:\u003c\/strong\u003e Add \u003ca href=\"\/en\/products\/thixo-a\"\u003eSilicone Thixo A\u003c\/a\u003e or \u003ca href=\"\/en\/products\/filler-fumed-silica\"\u003efumed silica\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColouring:\u003c\/strong\u003e Use \u003ca href=\"\/en\/products\/silicone-dye\"\u003esilicone pigment\u003c\/a\u003e for intense colours\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSilicones and More\u003c\/strong\u003e supplies high-quality silicones for professional mould making, concrete moulds, WetCast and industrial applications.\u003c\/p\u003e\n\u003ch3\u003eImportant Warning: Inhibition in Addition-Cure Silicones\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e This is an addition-cure silicone (platinum-cure). These silicones can be inhibited by sulphur, nitrogen, amino compounds and metal salts. If you are unsure whether the products you are using (including gloves, spatulas and cups) contain these ingredients, please do a small test first. These substances are found in many latex gloves, some plasticines, paints and adhesives, condensation-cure silicones, 1-component silicone sealants, natural rubbers and 3D printing materials (especially stereolithography). If you still wish to use these, you will need to apply a protective layer of \u003ca href=\"\/en\/products\/siliconesandmore-polyvinyl-alcohol-release-agent\"\u003epolyvinyl alcohol (PVA)\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eProfessional Support\u003c\/h3\u003e\n\u003cp\u003eOur technical specialists advise on material selection, hardness adjustments, processing techniques and optimal results for your specific concrete or heavy casting application. Contact us for technical data sheets, processing guidelines or advice on preventing inhibition in addition-cure silicones.\u003c\/p\u003e","brand":"Silicones and More","offers":[{"title":"1 kg set","offer_id":49489538842965,"sku":"S10168","price":28.95,"currency_code":"EUR","in_stock":true},{"title":"2 kg set","offer_id":49489538875733,"sku":"S10167","price":53.75,"currency_code":"EUR","in_stock":true},{"title":"10 kg set","offer_id":49489538908501,"sku":"S10166","price":262.0,"currency_code":"EUR","in_stock":true},{"title":"50 kg set","offer_id":49489539006805,"sku":"S10169","price":1196.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/4096\/0341\/files\/huismerk-sam-siliconen-additie-kleurloos-50-harde-platinum-silicon-48037917524309.jpg?v=1772190384","url":"https:\/\/siliconesandmore.com\/en\/products\/silicone-addition-colourless-50-hard","provider":"siliconesandmore","version":"1.0","type":"link"}