Amawasha ngokuvamile ayinsimbi noma ipulasitiki.Izihlanganisi eziboshiwe ezisezingeni eliphezulu zidinga amawasha ensimbi aqinile ukuze avimbele ukulahleka komthwalo wangaphambili ngenxa ye-brinelling ngemva kokusetshenziswa kwetorque.Amawasha nawo abalulekile ekuvimbeleni ukugqwala kwe-galvanic, ikakhulukazi ngokufaka insulating izikulufu zensimbi ezivela endaweni eyi-aluminium.Zingase futhi zisetshenziswe ezinhlelweni ezizungezisayo, njenge-bearing.I-thrust washer isetshenziswa uma i-elementi eginqikayo ingadingeki ukusuka kumbono wokusebenza kwezindleko noma ngenxa yemikhawulo yesikhala.Izindwangu zingasetshenziswa ukunciphisa ukuguga nokungqubuzana, ngokuqinisa indawo engaphezulu noma ngokunikeza okokugcoba okuqinile (okungukuthi indawo yokuzithambisa).
Umsuka wegama akwaziwa;ukusetshenziswa kokuqala kwaleli gama kwakungo-1346, nokho-ke, okokuqala ngqa ukuqoshwa kwencazelo yalo kwakungo-1611.
Irabha noma i-fiber gaskets esetshenziswa kompompi (noma kompompi, noma amavalvu) njengetywina ngokumelene nokuvuza kwamanzi ngezinye izikhathi kuthiwa yi-colloquially ngokuthi amawasha;kodwa, nakuba zingabukeka zifana, ama-washer nama-gaskets ngokuvamile aklanyelwe imisebenzi ehlukene futhi enziwa ngendlela ehlukile.
Amawasha amaningi angahlukaniswa ngezinhlobo ezintathu ezibanzi;
Amawasha angenalutho, asabalalisa umthwalo, futhi avimbele ukulimala endaweni engaguquki, noma anikeze uhlobo oluthile lokugqumisa njengogesi.
Amawasha asentwasahlobo, ane-axial flexibility futhi asetshenziselwa ukuvimbela ukuqiniswa noma ukuxega ngenxa yokudlidliza.
Ama-washers okukhiya, avimbela ukubopha noma ukuxegisa ngokuvimbela ukuzungezisa okungahlehlisiwe kwensiza yokubopha;amawasha okukhiya ngokuvamile nawo amawasha asentwasahlobo.