Cov khoom siv roj hmab ntuj: nws qhov kub thiab txias yog li 120 degrees.
Nitrile roj hmab: zoo kub tsis kam, tuaj yeem ncav cuag 130 degrees ntawm qhov kub thiab txias, nws qhov kub thiab txias ua haujlwm nruab nrab ntawm -40-120 degree.
Fluorine roj hmab (FPM): muaj qhov kub thiab txias tsis kam, qhov kub ntau tuaj yeem ncav cuag 280 degrees, ntxiv rau nws muaj oxidation zoo heev, kev laus tsis kam thiab tsis tshua muaj roj permeability, yog li nws muaj ntau yam kev siv. Nws qhov ntsuas kub ua haujlwm yog nyob nruab nrab ntawm -20 degree thiab 280 degree .
Silica gel (SI): Nws ua haujlwm nyob rau hauv qhov kub ntawm -60 degree mus rau 180 degree thiab feem ntau siv hauv kev lag luam khoom noj rau kev sib khi vim nws tsis muaj ntxhiab thiab tsis muaj tshuaj lom.
Ethylene propylene diene roj hmab (EPDM): Nws qhov kub thiab txias yog -50 ~ 150 degree, nrog rau chav ua haujlwm, kub tsis kam rau dej, chav ua haujlwm, kev laus ua haujlwm thiab cov khoom siv tshuaj.
Peb tuaj yeem paub tias cov ntaub ntawv sib txawv ntawm cov roj hmab O-ring, nws qhov kub thiab txias qhov kub tsis zoo ib yam, yog li thaum peb yuav, peb yuav tsum muaj kev nkag siab txog nws cov khoom, tshwj xeeb tshaj yog thaum siv nyob rau hauv qhov kub thiab txias, yuav tsum xaiv cov khoom siv ntau lawm. ntawm sealing qhov chaw.
