M4644 is a high performance silicone mould-making compound that is suitable for reproducing models with undercuts in polyurethane or epoxy resins.M4644 is also a Food Grade Silicone RubberRecommended for: Food Grade, Concrete, Plaster, Epoxy, PolyurethanePotlife & Demould: Work time – 90 mins / Demould time – 12 hrsHardness & Type: Shore A40 /-2 Silicone Elastomer, 50000cpsPourable, addition-curing, two component silicone rubber that cures at room temperature.Good FlowMedium Shore A Hardness (approx 40)Fast non-shrink cure which can be accelerated considerably by the application of heatGood transparency of the cured rubberHigh tear strengthOutstanding resistance to casting resins, particularly polyurethanes and epoxies
