Heat vulcanized silicone rubber (HTV) is the most important kind of silicone products, methyl vinyl silicone rubber (VMQ) is the most important variety of HTV, commonly known as high temperature rubber. Methyl vinyl silicone rubber (raw rubber) is colorless, odorless, non-toxic, no mechanical impurities of the rubber, according to the need to add appropriate reinforcing agent, structural control agent, vulcanizing agent and other additives mixed together, and then heating molding or extrusion molding, and then through two sections of vulcanization into various products. Its products have excellent electrical insulation, arc resistance, corona, spark resistance, waterproof, moisture-proof, impact resistance, shock resistance, with physiological inertia, permeability and other properties. Mainly used in aviation, instrument, electronic appliances, navigation, metallurgy, machinery, automobile, medical and health departments, can be made of various shapes of sealing rings, gaskets, pipes, cables, also can be made of human organs, blood vessels, breathable film, rubber mold, precision casting release agent, etc.