The piston is an indispensable part of the automobile cylinder, and its quality directly determines the quality of the brake cylinder.
Good quality VS Low quality
It is obvious that the piston on the left is of high quality, and the piston on the right is of low quality. The surface of the high-quality piston is hard-oxidized, which is very smooth and hard. And low-quality pistons will have very obvious wear after use, which will cause oil leakage in the brake cylinder during use, and then affect the brake system.
This is the assembled piston we use, and the surface is coated with grease, which is not only convenient for installation but also can reduce the wear when the product is used.