Mold Star 16 Platinum Silicone Rubber is easy to use. Featuring a low viscosity it pours smoothly to create exact copies of original models in that way that only Smooth-On products can. Mold Star 16 is a fast material that cures soft and strong; with a 6 minute pot life and a 30 minute cure time. Tear resistant and low long term shrinkage, molds made with Mold Star 16 last a long time, and work well for casing wax, gypsum, resins, concrete, low-temperature melt metal alloys, and other material. When cured Mold Star 16 is resistant to heat up to 450 degrees Fahrenheit.