Cast-A-Mold 25T is a general purpose rtv silicone elastomer which exhibits excellent tear strength, long library life, and accurate detail reproduction. Cast-A-Mold 25T is a condensation cured silicone (tin catalyzed ) It is used to make rubber molds that can be used to cast polyurethanes, epoxy"s, polyester"s, cement, concrete, soap, wax, plaster, etc.. It is easy to mix and de-air, and will cure at room temperature over virtually any surface. Cast-A-Mold 25T is extremely usefull for applications where superior physical properties are required. For more casting information visit our website at www.specialtyresin.comProduct: Cast-A-Mold 25TMix Ratio: 10:1 by weightWorking Time: 3.5 hoursDemold Time: 16 hourHeat Deflection: 300 f +Tensile Strength, psi: 580Elongation %: 380Tear Resistance, ppi: 150Color: GreenHardness: A-25Viscosity: 50,000 cpds