O-ring, O-ring (O-rings) yog ib hom roj hmab sealing nplhaib nrog ib ncig hla ntu. Vim nws O-shaped cross section, nws hu ua O-ring roj hmab sealing nplhaib, kuj hu ua O-ring. Nws pib tshwm sim nyob rau hauv nruab nrab ntawm lub xyoo pua puv 19, thaum nws tau siv los ua ib qho kev sib khi rau lub tog raj kheej lub tog raj kheej. O-rings yog cov khoom siv ntau tshaj plaws rau cov ntsaws ruaj ruaj vim tias lawv pheej yig, yooj yim los tsim, txhim khu kev qha hauv kev ua haujlwm, thiab muaj kev yooj yim installation. O-rings tiv taus kaum tawm megapascals (ntau txhiab phaus) ntawm lub siab. O-rings tuaj yeem siv rau hauv daim ntawv thov zoo li qub nrog rau cov ntawv thov dynamic uas muaj cov lus sib txheeb ntawm qhov chaw, xws li shafts ntawm cov twj rotary thiab pistons ntawm hydraulic cylinders.
