Silicone rubber refers to a rubber whose main chain consists of alternating silicon and oxygen atoms, and two organic groups are usually attached to the silicon atoms. Silicone rubber has good low-temperature resistance and can generally work at -55°C. After the introduction of phenyl, the temperature can reach -73°C. Silicone rubber also has outstanding heat resistance. It can work for a long time at 180°C, and can withstand a few weeks or longer when it is slightly higher than 200°C, and it can withstand high temperatures above 300°C in an instant. Silicone rubber has good air permeability, and its oxygen transmission rate is the highest among synthetic polymers. As one of the most important forms of silicone, silicone rubber can maintain long-term elasticity within a certain temperature range, and has excellent electrical properties and chemical stability, and can play a role in water resistance, ozone resistance and aging resistance. And civil use plays an extremely important role.

For silicone rubber products with general temperature requirements (-70 ～250℃), vinyl silicone rubber can be used; when the product’s temperature requirements are high (-90 ～300℃), low phenyl silicone rubber can be used ; When the product requires high and low temperature resistance and fuel or solvent resistance, fluorosilicone rubber should be used.