The difference between washer and gasket-what is washer

What is washer?

washers are generally used between bolts and nuts.It mainly plays a fastening role,and it is a standard part.

Metallic gaskets finished in Haihao Group

Metallic gaskets finished in Haihao Group

What is gasket?

Gasket,flange gasket,used in flange connection,simplified connection of equipment,plays a sealing role,and the material is soft.It is generally non-standard.

Plate washer and spring washer finished in Haihao Group

Plate washer and spring washer finished in Haihao Group


A washer is a thin plate (typically disk-shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener.Other uses are as a spacer,spring(belleville washer,wave washer),wear pad,preload indicating device,and locking device.Rubber or silicone washers may also be used to reduce vibration when fastening fans to computer cases.Usually washers have OD(outer diameter) about twice their ID(inner diameter).

Washers are usually metal or plastic.High quality capscrews require hardened steel washers to prevent the loss of pre-load to Brinelling after the torque is applied.Rubber or fiber gaskets used in taps to stop the flow of water are sometimes referred to colloquially as washers;while they may look similar,however,washers and gaskets are usually designed for different functions and made differently.Washers are also important for preventing galvanic corrosion,particularly by insulating steel screws from aluminum surfaces.

Haihao Group can supply flange gaskets,washers and flanges products in high quality,if you are interesting about our products,please contact us