Introduction

The sealing system of the car door is mainly aimed at two areas. One is the sealing of the door opening area. Seal the entire door opening. Some models have two rings of sealing strips, while others only use one ring of sealing strips. Different models choose which sealing strategy to use according to performance requirements or cost goals. Another area on the door that needs to be sealed is the door and window area, which is mainly achieved by the glass run channel seal strip on the window frame and the two window sill seal strips on the inside and outside. The role of lifting, usually the glass run channel sealing strip is the most demanding and the most complicated structure in the sealing system of the whole vehicle.