There are many advantages of silica gel sealing gasket. First, its heat resistance can work in a very low temperature environment, with a minimum temperature of - 100 ℃. It has good oxidation and ozone resistance in the air. Because of the molecular structure of silica gel, the silica gel sealing ring has good permeability and gas selectivity, and it is non-toxic and odorless, so it will be used in many food and medical industries.
Insulation performance is another advantage, but if carbon black, nickel powder, aluminum powder, etc. are properly added to the material, it can also increase its conductivity. Silicone sealing ring also has hygroscopic property, which can absorb and insulate water in the environment, but has poor water vapor resistance. Its disadvantages are also obvious. Which environments are not suitable for using silicone sealing gaskets?
1. First of all, it is not suitable to use silicone sealing ring under the working pressure of more than 50 pounds;
2. Although silicone rubber is compatible with most oils, compounds and solvents and has good acid and alkali resistance, it has no resistance to alkane and aromatic oils.
3. It is not recommended to use silicone sealing gasket in most concentrated solvent, oil, concentrated acid and diluted caustic soda solution.
