Silicone is one of the materials of choice for any application that deals with environmental factors that can break down other solutions. When it comes to extreme temperature, silicone rubber offers a great range of resistance in both hot and cold environments. In addition, silicone provides far superior tensile strength, elongation, tear strength, and compression sets in extreme temperatures than conventional rubbers. http://www.insulation-tubings.com/rubber-products/silicone-rubber/