Considering the process performance of common rubber materials, sometimes it is necessary to choose and use rubber, such as natural rubber (NR) and CR and SBR Rubber or polyethylene (PE), EPDM and NR rubber and plastic to improve ozone resistance. Use parts can be divided into: Automotive sealing strip, door and window sealing strip, ship sealing strip, mechanical sealing strip and other three categories; Mechanical sealing strips include cabinet and container sealing strips. It consists of two parts: sealing and installation. Such products mainly use the elasticity of lips, cavities, flanges and other parts of the body structure and the contact pressure generated by the surface of the assembly of the coupling parts (glass, metal, etc.) and play a sealing and decorative role. Generally used in the range of -50 ~ 70℃.