What is a composite sealing strip?

Composite sealing strips are divided into single extrusion composite sealing strips, double composite sealing strips, three composite sealing strips, four composite sealing strips, soft and hard composite sealing strips, etc. For example, the automobile door frame sealing strip is a typical four-composite sealing strip, which includes dense rubber, sponge rubber, metal skeleton and colored surface rubber.

It is said that it can not only be used for automobile sealing strips, but also for various parts of the body, as well as for sealing the gaps between various components, and can also play a good role in shock absorption, damping, waterproof and dustproof. With the development of the automobile industry, with the development of the automobile industry, more and more composite sealing strips are becoming more and more important in terms of beauty, environmental protection and comfort.

So what are single extrusion composite sealing strips, double composite sealing strips, three composite sealing strips, four composite sealing strips, soft and hard composite sealing strips?

1) Single extrusion composite sealing strips can be considered as pure rubber seals, which are composed of a single material rubber species.
2) Double composite sealing strips can also be called two composite sealing strips, which are generally composed of foam sponge rubber and dense rubber. Metal skeleton materials are often wrapped inside the dense rubber sealing strip or in the axial direction of the dense rubber sealing strip.
3) Triple composite sealing strips are composed of two dense rubbers (one of which is light-colored dense rubber) and sponge rubber. Reinforced fibers and metal skeletons are usually added to the dense rubber.
4) Quad composite sealing strips are made of four materials. A thin rubber protective layer is coated on the surface of the sponge rubber (foam tube), thereby further improving the service life of the sealing strip.