... either room temperature or heat cured.1.Moderate viscosity,easy to apply,high durometer,strong strength, primarily intended for the manufacturer ... is a kind elastic silicone mold which features with resistance to deformation, high-temperature, acid-alkali and expansion as well ... >40Elongation% >350Tear strength kg/cm >22Linear shrinkage % 0.35How to use1.Pls mix the RTV-1028 thoroughly before use.2 ...