I-Polytetrafluoroethylene(I-Teflon okanye i-PTFE), eyaziwa ngokuba yi-"plastic king", yi-polymer compound eyenziwe nge-tetrafluoroethylene nge-polymerization, enozinzo oluhle kakhulu lweekhemikhali, ukumelana nokugqwala, ukutywina, ukungathambisa okuphezulu, ukugquma kombane kunye nokunyamezela okuhle kokwaluphala.

I-PTFE kulula ukuyicola kwaye irhubuluza phantsi koxinzelelo kunye nobushushu obuphezulu, ngoko ke isetyenziswa ngokubanzi kuxinzelelo oluphantsi, ubushushu obuphakathi, ukugqwala okunamandla kwaye ayivumeli ungcoliseko lwesixhobo, njenge-asidi enamandla, i-alkali, i-halogen, amayeza njalo njalo. Ubushushu obukhuselekileyo bokusebenza yi-150℃ kwaye uxinzelelo lungaphantsi kwe-1MPa. Amandla e-PTFE azaliswe ngokupheleleyo aya kwanda, kodwa ubushushu bokusetyenziswa abunakudlula kwi-200℃, kungenjalo ukumelana nokugqwala kuya kuncipha. Uxinzelelo oluphezulu lokusetyenziswa kwe-PTFE packing ngokubanzi aludluli kwi-2MPa.

Ngenxa yokunyuka kobushushu, izinto ziya kurhubuluza, nto leyo ebangela ukwehla okukhulu koxinzelelo lwetywina. Nokuba ubushushu bufanelekile, njengoko ixesha lihamba, uxinzelelo loxinzelelo lomphezulu wotywina luya kuncipha, nto leyo ebangela "ukuphazamiseka koxinzelelo". Le nto iya kwenzeka kuzo zonke iintlobo zeegaskets, kodwa ukukhululeka koxinzelelo lwephedi ye-PTFE kunzulu ngakumbi, kwaye kufuneka uqaphele.

I-coefficient yokuxinana kwe-PTFE incinci (uxinzelelo lokuxinana lungaphezulu kwe-4MPa, i-coefficient yokuxinana yi-0.035 ~ 0.04), kwaye i-gasket kulula ukuyikhupha ngaphandle xa iqiniswa kwangaphambili, ngoko ke kungcono ukusebenzisa umphezulu we-flange ogobileyo kunye nowe-convex. Ukuba kusetyenziswa i-flange ethe tyaba, ububanzi bangaphandle be-gasket bunokutsalwa nge-bolt ukuthintela i-gasket ukuba ingatyibiliki ngaphandle.

Ngenxa yokuba izixhobo zeglasi zitshixiwe emva kokutshiza umaleko we-enamel kumphezulu wesinyithi, umaleko we-glaze ubuthathaka kakhulu, udibene nokutshiza okungalinganiyo kunye nokuhamba komaleko we-glaze, umphezulu we-flange awulunganga. I-gasket yentsimbi edibeneyo kulula ukuyonakalisa umaleko we-glaze, ngoko ke kuyacetyiswa ukusebenzisa izinto eziphambili ezenziwe ngebhodi ye-asbestos kunye nerabha ye-PTFE. Ukupakisha kulula ukufanela nomphezulu we-flange kwaye kuyamelana nokugqwala, kwaye isiphumo sokusebenzisa silungile.

Kukho iifektri ezininzi kubushushu, uxinzelelo aluphezulu kwindawo enamandla yokubola, ukusetyenziswa kwe-asbestos rabha plate esongiweyo ngebhanti yePTFE yezinto ezikrwada, kwiimbobo ezihlala ziqhekeka, iipayipi. Ngenxa yokuba imveliso nokusetyenziswa kulula kakhulu, zithandwa kakhulu.