Precise edge wrapping, dual effect of scratch prevention and edge protection: The “U” shaped opening can tightly fasten the edges of the door and window profiles with sharp edges and cutting surfaces, which can prevent hand scratches during opening and closing, and protect the edges of the profiles from collision and wear, extending the service life of doors and windows.

Buffer shock absorption and noise reduction: Elastic rubber can absorb collision impact force, reduce friction noise between components, and extend the service life of the substrate and sealing strip itself.