1. Qhov luaj li cas ntawm lub nplhaib-mounted roj hmab foob yog tsis kam, tshwj xeeb tshaj yog thaum qhov tob qhov loj heev, lub compression deformation ntawm imported O-ring tom qab installation yog tsis txaus thiab lub sealing muaj peev xwm cuam tshuam. Feem ntau, compression deformation ntawm lub nplhaib-hom roj hmab foob tom qab kev teeb tsa yuav tsum nyob nruab nrab ntawm 18 feem pua thiab 22 feem pua.
2. Qhov loj ntawm lub nplhaib-hom roj hmab foob yog qhov sib txawv ntawm qhov loj me me, thiab O-ring tau tsim los ua haujlwm raws li cov xwm txheej uas cov seem loj yog txo tom qab ncab, ua rau tsis txaus compression deformation thiab to.
3. Thaum lub nplhaib sealing raug ntsia, lub nplhaib-zoo li cov roj hmab foob raug khawb thiab xau vim tsis muaj cov chamfering du lossis rounding ntawm qhov nkag ntawm qhov sealing nto.
4. Cov khoom siv ntawm lub nplhaib hom roj hmab foob tsis haum rau qhov nruab nrab sealing thiab yuav ua tsis tiav tom qab eroded.
5. Lub nplhaib-zoo li cov roj hmab foob yuav muaj hnub nyoog thiab deterioration tom qab siv ntev dhau lawm, thiab elasticity yuav txo qis thiab tom qab ntawd poob. Yog li ntawd, lub nplhaib zoo li lub nplhaib feem ntau yog hloov thaum cov khoom siv kho dua tshiab.