What Is The Difference Between Rubber Gasket And Washer

Rubber gasket is a mechanical seal between two objects, which is usually used to prevent the two objects from being subjected to pressure, corrosion, and natural expansion and contraction of pipeline. Since machined surfaces cannot be perfect, the use of spacers can fill irregularities. The gasket is usually made of sheet materials, such as pad paper, rubber, silicone rubber, metal, cork, felt, neoprene, nitrile rubber, glass fiber or plastic polymer (such as polytetrafluoroethylene).


Gasket is a hole (usually in the middle) in thin plate (usually round type) which is usually used for distributing load thread fastener, the part between connecting piece and nut, generally flat metal ring. Other uses are as spacer, spring (Belleville gasket, wave gasket), wear pad, pre display device, lock device. Rubber gaskets are also used in faucets (valves) to shut off flowing liquid or gas. Rubber or silicon gasket can also be used to reduce fan vibration. Generally, the outer diameter of gasket is about twice the inner diameter.