The variety of silicone rubber is more, according to their chemical composition, classification, divided into dimethyl silicone rubber, methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, fluorine silicone rubber, acrylic silicone rubber, phenyl silicone rubber, boron silicone rubber, RTV silicone rubber.

According to its shape in silicone rubber crosslinking mechanism of classification can be divided into linear siloxane polymer polymerization degree of 5000-5000, as the main ingredients of mixed type, linear siloxane polymer polymerization degree of 100-100 (oil) as the main component of liquid state.

Foreign goods are generally classified according to the use, the products of the factory according to the chemical structure, composition, molecular weight and decide in a variety of different grades. HTV silicone rubber is usually to add some packing makings form or to join the most or all of the ingredients of the rubber sold, and RTV silicone rubber is all sold in the form of rubber. As for the rubber reinforcing filler and compatibilizing packing varieties, dosage, plasticizer, curing system and special additives are transformation, have their own brand goods.