The main functions are dustproof, insect-proof, waterproof, soundproof, and sealing. The plastic steel door and window sealing strips on the market are generally extruded from PVC, modified PVC, EPDM, elastomer sealing strips (including TPV, TPE, TPR, SEBS), silicone and other materials to form a good waterproof, sealing, Moreover, it also has the functions of sound insulation, anti-freeze and warmth. The sealing strip of plastic steel doors and windows has good elasticity, strong telescopic ability, high temperature resistance and long service life.

 

It must have strong tensile strength, good elasticity, and good temperature resistance and aging resistance.