Smooth-Sil™ Platinum Silicones exhibit good chemical, abrasion and heat resistance. Materials such as plasters, concrete, wax, low-melt metal alloys or resins (urethane, epoxy or polyester) can then be cast into these silicone rubbers without a release agent. Smooth-Sil™ 940, 950, and 960 are food grade silicones suitable for making baking molds and trays, ice trays, casting butter, chocolate and other applications used to produce food.