The sealing strips all need sealing rubber strips to achieve the closed sealing between the profile and the glass, and between the fan and the frame. The sealing strip plays a role of fixing glass in the use of doors and windows, buffering vibration and blocking water and air flow. The thermal insulation performance and air-tightness performance of doors and windows have a significant impact on the energy conservation and consumption reduction of buildings. The heat loss of doors and windows with poor sealing is 5-6 times that of wall. The energy-saving efficiency of doors, windows and curtain walls accounts for about 37-40% of building energy efficiency. Therefore, the sealing strip is a functional accessory that cannot be ignored in the energy-saving standards of doors and windows, and its performance and service life should attract our attention.