Gaskets tso cai rau qhov chaw tsis sib haum xeeb kom ua tiav ntawm cov khoom siv tshuab. Lub liner feem ntau yog tsim los ntawm kev txiav los ntawm cov ntaub ntawv.
Gaskets rau cov kev siv tshwj xeeb, xws li cov tshuab hluav taws xob siab, yuav muaj asbestos. Txawm li cas los xij, vim muaj kev phom sij rau kev noj qab haus huv cuam tshuam nrog asbestos raug, cov ntaub ntawv tsis-asbestos gasket tau siv tiag tiag.
Nws yog feem ntau xav tau tias cov ntaub qhwv yuav tsum tau ua los ntawm cov khoom tsim los rau qib xws li nws deforms thiab sau qhov chaw uas nws tau tsim los ze, nrog rau cov pob me me. Qee qhov gaskets xav tau cov sealant kom ncaj qha rau ntawm qhov chaw gasket kom ua haujlwm zoo.
Qee qhov (cov yeeb nkab) liner yog tsim los ntawm cov hlau thiab tso siab rau ntawm lub rooj zaum saum npoo kom tiav lub foob; siv cov hlau nws tus kheej lub caij nplooj ntoos hlav (txog tab sis tsis tshaj σy, cov khoom siv lub zog tawm los). Qhov no yog ib qho ntawm qee qhov "ntiv nplhaib sib koom" (RTJ) lossis qee qhov hlau gasket. Cov pob qij txha no hu ua R-con thiab E-con compression hom pob qij txha