1.Methyl silicone rubber
Dimethyl silicone rubber is put into commercial production of the earliest kind of silicone rubber, can be in the range of -60 ~ 200 ℃ to maintain good elasticity, aging resistance is good, there are excellent electrical insulation properties as well as moisture-proof, shock-proof and physiological inertia and other characteristics.
Dimethyl silicone rubber is mainly used for strong coating, can also be made into a variety of extruded and calendered products for electromechanical, aviation, automotive and medical industries. However, due to the low vulcanization activity of dimethyl silicone rubber, used in the manufacture of thick products, vulcanization difficulties, the inner layer is easy to bubble and high-temperature compression of permanent deformation, so it has been replaced by methyl vinyl silicone rubber.
2. Methyl vinyl silicone rubber
Methyl vinyl silicone rubber is the most widely used varieties of silicone rubber, in recent years the emergence of a variety of high-performance and special-purpose silicone rubber, most of the vinyl silicone rubber as the base rubber, such as high-strength silicone rubber, low compression permanent deformation of the silicone rubber, do not need after vulcanization of the silicone rubber, heat-resistant and conductive silicone rubber and medical silicone rubber. Methyl vinyl silicone rubber in the aviation industry, widely used as gaskets, sealing materials and fragile, shockproof parts of the protective layer; in the electrical industry can be used as electronic components and other high-level insulating materials, high-temperature potentiometer dynamic sealing ring, underground long-distance communication equipment sealing ring; in medicine, due to the physiological reaction of methyl vinyl silicone rubber on the human body is small, non-toxic, so it is used as a surgical orthopedics, artificial heart valves, blood vessels.
3. Methyl phenyl vinyl silicone rubber
Methyl phenyl vinyl silicone rubber is the introduction of methyl vinyl silicone rubber in the molecular chain of methyl phenyl silicone oxygen chain or diphenyl silicone oxygen chain and get the product. It has a unique cold resistance, in -70 ~ -100 ℃ can still maintain the elasticity of the rubber, is the best low-temperature performance of all the rubber, coupled with its both the advantages of methyl vinyl silicone rubber and the cost is not high, so there is a big trend to replace methyl vinyl silicone rubber. Phenyl content of 20 ~ 40% called in the phenyl silicone rubber, it has excellent flame-resistant properties, once the fire can be self-extinguishing. Phenyl content of 40 ~ 50% called high phenyl silicone rubber, it has excellent radiation resistance, resistance to γ - rays for 1xI08 roentgen. Generally speaking, with the increase of phenyl content, the rigidity of the molecular chain of silicone rubber gradually increased, the low temperature resistance of silicone rubber gradually decreased, but with the increase of phenyl content, improve the vulcanization of the rubber flame resistance and irradiation resistance.
Methyl phenyl vinyl silicone rubber is the aerospace industry, cutting-edge technology and other sectors of the national economy, one of the important materials, can be used to make a variety of molded and extruded products used as cold-resistant rubber in the aviation industry and used for ablative, heat aging or radiation-resistant parts of the seals, pads, tubes and rods and so on.
4. Fluorosilicone rubber
Fluorosilicone rubber refers to γ-trifluoropropyl methyl polysiloxane. Fluorosilicone rubber has excellent resistance to chemicals, solvents and lubricant resistance, this silicone rubber in non-polar solvents in the expansion rate is small, cold resistance and thermal stability is good, anti-fire or good, so in the aircraft, rockets, missiles, cosmic flight, petrochemicals, used as fuel oil and lubricating oil contact hose, gaskets, seals, fuel tanks, such as the village, but also used to make corrosion-resistant clothes, gloves and coatings, adhesives and so on. It can also be used to make corrosion-resistant clothes, gloves and paints, adhesives, etc.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150A. 
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.