Qhov chaw uas txuas cov yeeb nkab mus rau cov yeeb nkab yog txuas nrog cov yeeb nkab kawg. Muaj qhov nyob hauv flange thiab bolts tuav ob lub flanges ua ke. Gasket seals ntawm flanges. Flanged yeeb nkab fittings xa mus rau cov yeeb nkab fittings nrogflanges(flanges los yog pob qij txha). Nws tuaj yeem yog cam khwb cia, threaded lossis welded. Lub flange kev twb kev txuas muaj ib khub ntawm flanges, ib tug gasket thiab ib tug xov tooj ntawm bolts thiab ceev.

Muaj peb homflange sealingnto: dav hlau sealing nto, haum rau siab tsis siab, uas tsis yog-tshuaj lom media zaus; Concave thiab convex sealing nto, haum rau me ntsis siab dua zaus; Tenon groove sealing nto, haum rau cov nplaim taws, tawg, muaj tshuaj lom nruab nrab thiab lub sijhawm siab. Gasket yog ib hom nplhaib uas tuaj yeem tsim cov yas deformation thiab muaj qee lub zog. Feem ntau ntawm cov gaskets raug txiav los ntawm cov ntawv tsis yog xim hlau, los yog ua nyob rau hauv cov chaw ua haujlwm tshaj lij rau qhov ntau thiab tsawg. Cov ntaub ntawv yog asbestos roj hmab los xij, asbestos nplooj ntawv, polyethylene los xij thiab lwm yam.
Flangexov txuas (xov hlau txuas) flanges thiab welded flanges thiab clamp flange. Tsawg siab me txoj kab uas hla threaded flange thiablub tes tsho flange, siab siab thiab tsis tshua muaj siab loj txoj kab uas hla yog welded flange, flange thickness thiab txuas bolt txoj kab uas hla thiab tus naj npawb ntawm qhov sib txawv siab yog txawv.