Room temperature vulcanized silicone rubber (RTV) is a new type of silicone elastomer that came out in the 1960s. The most significant feature of this type of rubber is that it can be cured on the spot without heating or pressing at room temperature, and it is extremely convenient to use. Therefore, as soon as it came out, it quickly became an important part of the entire silicone product. Now room temperature vulcanized silicone rubber has been widely used as adhesives, sealants, protective coatings, potting and molding materials, and has its uses in all walks of life.

Room temperature vulcanized silicone rubber is known as liquid silicone rubber due to its low molecular weight. Its physical form is usually a flowable fluid or a viscous paste, and its viscosity is between 100 and 1,000,000 centistokes. According to the requirements of use, the rubber compound before vulcanization can be made into a self-leveling potting compound or a putty that does not flow but can be applied. The filler used in room temperature vulcanized silicone rubber is similar to that of high-temperature vulcanized silicone rubber. It is reinforced with white carbon black, so that the vulcanized rubber has a tensile strength of 10-60 kg/cm2. Adding different additives can make the rubber compound have different specific gravity, hardness, strength, fluidity and thixotropy, and make the vulcanized rubber have various special properties such as flame retardant, electrical conductivity, thermal conductivity, and ablation resistance.