Washers

A rubber washer is defined as a thin disk made of rubber with a hole in the middle.
The washer is normally used to support the weight of a threaded fastener. It is also used as a spacer,
spring, wear pad, pre-load indicating device as well as locking device.washers are made of
various materials like metal, plastic, rubber. A common material is rubber. Rubber washers are used in
taps or valves where they act as the seal that prevents or closes the flow of liquid or gas.
All washers have an outer diameter (od) about twice their inside diameter (id). Rubber gaskets
which are used in taps to stop the flow of water are also sometimes referred to as washers
because they look similar. But, washers and gaskets are usually made
differently and designed for different functions. types of rubber used in rubber washers
neoprene
styrene butadiene rubber (sbr)
ethylene propylene diene monomer (epm, epdm)
silicone rubber (sir)
nitrile rubber (nbr)
fluoroelastomers (fkm)viton
features of rubber washers rubber materials are preferred for washers because of rubber's