Plastic steel door and window sealing strips play an important role in water tightness, air tightness, and energy saving in doors and windows. According to the function and usage requirements of the sealing strip, the plastic steel door and window sealing strip must have sufficient tensile strength, good elasticity, good temperature resistance and aging resistance, and the cross-sectional structural dimensions should match the plastic steel door and window profiles. Plastic steel door and window sealing strips are divided into two types in terms of their uses: glass sealing strips (rubber strips) and wool strips. Glass sealing strips are used for sealing between glass, fans, and frames, while wool strips are mainly used for sealing between frames and fans