Silicone rubber has excellent heat resistance, cold resistance, dielectric, ozone resistance and corrosion resistance and other properties, properties of silicone rubber prominent is the use temperature is broad, in -60 ℃ (or lower temperature) to +250 ℃ (or high temperature) under long-term use. But the tensile strength and tearing strength poor mechanical properties of silicone rubber at room temperature, the physical and mechanical properties than most synthetic rubber, and in addition to silicone, fluorosilicone rubber, general silicone rubber oil resistance, solvent resistance is poor, so the silicon rubber is not suitable for ordinary condition, but is very suitable for many special occasions. It is worth mentioning that, in biomedical engineering, polymer materials plays a very important role, and silicone rubber is a kind of very important medical polymer materials, it has excellent physiological inert, non-toxic, tasteless, no corrosion, anti coagulation, and the compatibility is good, can withstand the harsh conditions of sterilization. According to the need to be processed into pipe, sheet, film and special-shaped components, can be used as medical devices, artificial organs, etc.. A medical grade silicone rubber special both at home and abroad.