Thaum xaiv O-ring, feem ntau yuav tsum xav txog kev sib khi ntawm O-ring. Feem ntau O-ring sealing txoj kev muaj xws li teb foob, rov qab-thiab-tawm foob, transverse (ncej) foob, ntsug (inch) foob, dynamic foob thiab lwm lub xeev seals. Piv txwv li, thaum lub nraub qaum thiab sab nraub qaum yog nyob rau hauv siab, seem ntawm O-ring yuav deformed los ntawm kev quab yuam. Nyob rau lub sijhawm no, nws tsim nyog xaiv qhov loj me me dua li tus qauv loj. Feem ntau, muaj lub hauv paus ntsiab lus uas lub puab txoj kab uas hla ntawm O-ring yuav tsum tau tshwj tseg rau txoj kab uas hla ntawm qhov zawj thiab qhov ntev ntawm qhov sib txawv nyob rau hauv cov kev taw qhia ntawm lub zog taw tes thaum lub zog yog deformed thiab flattened.
Yog tias siv lub foob pob hluav taws xob, lub nplhaib O-ring uas yog 1 feem pua -3 feem pua tsawg dua li txoj kab uas hla ntawm lub ncej yuav tsum raug xaiv, txhawm rau xyuas kom meej tias O-ntiv nplhaib tuaj yeem txuas nrog lub nplhaib. ncej thiab tsis yooj yim rau poob. Rau ntsug sealing, xaiv ib lub nplhaib O-ring nrog ib txoj kab uas hla loj dua ntawm 1 feem pua -3 feem pua, kom nws tsis yooj yim rau poob thiab raug crushed. Raws li qhov xav tau tiag tiag los xaiv cov khoom siv, ua cov ntsiab lus saum toj no, cov hauv paus ntsiab lus uas yuav tsum tau ua raws thaum xaiv O-ring feem ntau tsis tas yuav txhawj xeeb txog kev xaiv O-ring tsis raug.
Ntxiv rau cov kev cai dav dav rau cov khoom siv ntawm lub nplhaib sib khi, O-ring yuav tsum tau them sai sai rau cov xwm txheej hauv qab no: elasticity thiab resilience. Kev ua haujlwm ruaj khov, tsis yooj yim rau o hauv nruab nrab, me me thermal shrinkage nyhuv (Joule effect). Tsis corrode qhov chaw tiv tauj, tsis ua paug qhov nruab nrab, thiab lwm yam. Tsim nyog siv lub zog, nrog rau kev nthuav dav, elongation thiab tsim kua muag lub zog, thiab lwm yam. Yooj yim rau txheej txheem thiab daim ntawv, thiab muaj peev xwm tswj tau qhov ntev. Cov khoom siv zoo tshaj plaws thiab feem ntau siv los ua kom tau raws li qhov xav tau saum toj no yog roj hmab, yog li O-rings feem ntau yog ua los ntawm cov khoom siv roj hmab. Muaj ntau ntau hom roj hmab, thiab cov roj hmab tshiab tau tshwm sim tas li. Thaum tsim thiab xaiv, koj yuav tsum nkag siab txog cov yam ntxwv ntawm ntau yam roj hmab thiab xaiv lawv tsim nyog.