Silicone flame retardant sealing strip is a new kind of polymer elastic material, has excellent high temperature (250-300 ℃) and low temperature (40-60 ℃) function, good physical stability, silicone sealing silicone tube acceptable poor aseptic conditions for many times, has good flexibility, permanent deformation is not beyond 50% 48 hours (200 ℃), big breakdown voltage (e.g., 20 to 25 kv/mm), silicon silicone flame retardant sealing strip ozone resistance, uv resistance, radiation resistance and other characteristics, some special silicone rubber also has the special function such as oil and solvent, such as: Fluorosilicone rubber with excellent oil resistance, phenyl silicone rubber with excellent heat dissipation function, also adhere to the flexibility. In addition, silicone rubber also has excellent communication function and excellent electrical barrier function, suitable for the production of wires, cables, wires and impermeable materials.