Cov thev naus laus zis tseem ceeb ntawm cov thawv ntim dej tsis muaj dej yog ua raws li kev sib khi thiab xau- cov txheej txheem pov thawj los tiv thaiv cov dej noo thiab lwm yam khoom sab nraud los ntawm kev nkag mus rau sab hauv, tiv thaiv cov ntsiab lus. Cov thev naus laus zis feem ntau suav nrog cov hlua khi roj hmab, xau- cov ntaub ntawv pov thawj, thiab cov ntsia hlau tsis muaj dej. Nyob rau hauv cov nqe lus ntawm kev xaiv cov khoom, cov khoom siv sab nrauv yuav tsum muaj cov khoom xws li corrosion kuj, siab -kub tsis kam, qis- kub tsis kam, thiab cuam tshuam tsis kam, thaum cov khoom siv sab hauv xws li gaskets thiab sealing rings yuav tsum tau zoo elasticity, hnav tsis kam, thiab corrosion kuj. Cov ntsiab lus tseem ceeb ntawm cov qauv tsim muaj xws li lub hau, sealing nplhaib, hloov, thiab kho cov cuab yeej; kev tsim tsim nyog tuaj yeem txhim kho cov dej tsis zoo.
Cov khoom siv dej tsis zoo muaj qhov sib khi thiab qhov sib txawv. Lub sealing ib feem haum snugly tiv thaiv phab ntsa sab hauv ntawm lub plhaub qis, thaum lub qhov sib txawv ua ib lub sealant reservoir ntawm nws tus kheej thiab sab hauv phab ntsa. Thaum lub plhaub sab sauv thiab sab qis tau sib sau ua ke, qhov qis kawg ntawm lub hau sab saud nkag mus rau hauv lub sealant reservoir, tso cai rau lub sealant nyob rau hauv lub reservoir kom tiav qhov sib txawv, kom ntseeg tau ib tug tiav seal ntawm lub sab sauv thiab sab shells, yog li daws qhov teeb meem ntawm qhov khoob yooj yim tsim los ntawm kev kho cov ntsia hlau.
