Cov tshuab ntxhua khaub ncaws yas yog ua los ntawm cov yas. Hauv Suav teb, cov tshuab ntxhua khaub ncaws yas feem ntau hu ua tshuab ntxhua khaub ncaws yas, ntxhua khaub ncaws ntxhua khaub ncaws, yas ntxhua khaub ncaws lossis nylon ntxhua khaub ncaws.
Piv nrog cov gaskets hlau, nws muaj cov rwb thaiv tsev zoo heev, tiv taus xeb, rwb thaiv tsev kub thiab tsis muaj cov yam ntxwv sib nqus, thiab yog lub teeb yuag. Nws tau siv dav hauv ntau yam xws li cov khoom siv hluav taws xob, tsheb, kev lag luam dav hlau thiab kho kom zoo nkauj sab hauv.
