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 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 to make the vulcanized rubber have a tensile strength of 10-60 kg/cm2. The addition of 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.