The addition silicone gel is colorless or yellowish transparent oily liquid before vulcanization, and becomes soft and transparent silicone gel after vulcanization. Additive formed liquid silicone rubber is a type of silicone material that can be crosslinked and vulcanized at room temperature or heating in the presence of platinum catalyst, with ethylene based polydimethylsiloxane as the base polymer and Si-H bonded polydimethylsiloxane as the crosslinking agent. Addition type liquid silicone rubber, like condensation type liquid silicone rubber, can be divided into single component and two-component according to the product packaging form; According to the state after vulcanization, there are also rubber, gel, foam body and spherical differential. By adjusting the formula and controlling the vulcanization rate with addition reaction inhibitors, products that are suitable for various purposes can be made. Additive liquid silicone rubber (LSR) is a higher grade variety of silicone rubber. Compared with condensed liquid silicone rubber, it has the advantages of no by-products produced during the vulcanization process, minimal shrinkage, and deep vulcanization. Its sealing performance at high temperatures is also better than that of condensed liquid silicone rubber. In addition, LSR also has outstanding advantages of simple process and low cost. This is due to the small molecular weight, low viscosity, and easy processing and molding of liquid silicone rubber, which can eliminate processes such as mixing, pre molding, and post finishing, easily achieve automation, and save energy and labor. The production cycle is short and efficient. Therefore, although the raw material price of LSR is slightly higher than that of ordinary silicone rubber, the total cost is lower than that of ordinary silicone rubber, especially when manufacturing small products, which highlights its superiority in this aspect.