Silicone rubber has excellent heat resistance, cold resistance, dielectric properties, resistance to ozone and weathering properties, silicone rubber outstanding performance is the use of a wide temperature can at -60 ℃ (or lower) to +250 Long-term use ℃ (or higher temperature). However, the tensile strength and tear strength and other mechanical properties of the silicone rubber is poor in its physical and mechanical properties at room temperature is less than most synthetic rubbers, and silicon in addition to the nitrile, fluorosilicone rubber, in general, silicone rubber, oil, and solvent resistance poor, it is not appropriate for the occasion ordinary silicone rubber conditions, but very suitable for many special occasions. It is worth mentioning that, in biomedical engineering, polymer material has a very important role, and silicone rubber is particularly important in medical polymer materials for a class, it has excellent physiologically inert, non-toxic, tasteless, non-corrosion, anti-clotting, good compatibility with the body and can withstand harsh sterilization conditions. According to need can be processed into tubes, sheets, films and shaped member can be used as medical devices, artificial organs and the like. Today at home and abroad have special medical grade silicone rubber.