Gaskets are usually thin pieces of various shapes to reduce friction, prevent leaks, isolate, prevent loosening, or distribute pressure. This material is used in many materials and structures to perform a variety of similar functions. Due to the limitations of the material and process of the threaded fasteners, the bearing surfaces of the fasteners such as bolts are not large, so Gaskets are used to reduce the compressive stress of the pressure surface to protect the surface of the connected parts.