Generally, sealing materials shall have good physical and mechanical properties, high resilience, small compression permanent deformation, reliable sealing, convenient processing and long service life. Silicone rubber sealant is resistant to high and low temperature, radiation, vacuum, pollution and non-toxic; Polysulfide rubber sealant has excellent aviation fuel resistance, as well as high temperature resistance, high pressure resistance, friction resistance and pressure resistance. These are the leading directions of the sealing industry. The quality of sealing materials directly affects the production efficiency of mechanical body equipment. If you buy inappropriate products, it will have a great impact on the use efficiency of equipment. It is recommended to choose sealing materials carefully and try to use brand products, because brand products represent a responsibility and the strength of a manufacturer.