Molding RTV silicone rubber is a vinyl linear polysiloxane as the base rubber, with hydrosiloxane as the crosslinking agent, in the presence of a catalyst, at room temperature to medium temperature crosslinking reaction and become an elastomer. It has good heat resistance, hydrophobicity and electrical insulation. At the same time, due to the introduction of active end group, it has excellent physical and mechanical properties, especially in the tensile strength, relative elongation and tear strength has been significantly improved.

Condensation RTV silicone rubber is characterized by condensation reaction between silicon hydroxyl and other active substances, which can be crosslinked into elastomers at room temperature. Excellent electrical insulation and chemical stability, water resistance, ozone resistance, weathering resistance, a variety of metal and non-metal materials have good adhesion.

RTV silicone rubber is widely used in electronics and electrical appliances, automobile, machinery, construction, textile, chemical, light industry, printing and other industries, as insulation, encapsulation, caulking, sealing, moisture-proof, seismic and roller production materials. One of the typical applications is the glass curtain wall. The glass and aluminum alloy frame are bonded with silicone structural adhesive as exterior wall material, and the expansion joint is waterproof and sealed with silicone weather resistant adhesive.

Other applications also include used for aluminum alloy doors and Windows and plastic steel doors and Windows surrounding sealing, glass installation and moving groove joint, rivets and fixed screw sealing: kitchen, bathroom, toilet sanitary ware and table, wall, furniture waterproof sealing; Aquarium, ceiling, metal roof, window, counter, wall panel, color steel plate sealing, etc. In addition to building sealant, RTV silicone rubber also includes sealing materials used in aerospace, nuclear power plant, electronics, machinery, automobile and other industries, silicone sealing materials for electronic components, silicone mold rubber used as soft mold materials. These varieties are in relatively low demand, but are indispensable in many situations. RTV silicone rubber has been widely and important used in modern medicine, such as noise-proof earplugs, fetal head aspirators, artificial blood vessels and so on.