... and other media. Is the most widely used, the lowest-cost rubber sealing material. Does not apply to polar ... use temperature range is -55 °C ~ 120 °C.IIR (butyl rubber) sealsExcellent air tightness, heat resistance, sunlight resistance, smelly itchy, ... medicine, food, metallurgy smelting, hydraulic and other widely used as high temperature resistance, corrosion-resistant materials low coefficient of ...