Ama-PTFE O-rings ayizinto zokuvala eziyindilinga ezinesimo se-toroidal (esifana ne-donut), ezenziwe ngokucophelela kusuka ku-PTFE ukuze zinikeze uphawu oluthembekile nolumelana namakhemikhali ezinhlotsheni eziningi zezicelo zezimboni. Zisebenzisa izakhiwo eziyingqayizivele ze-PTFE, lawa ma-O-rings ayisinqumo esikhethwayo lapho zibhekene nezimo zamakhemikhali ezinzima, amazinga okushisa aphezulu, kanye nezicelo ezifuna ukungqubuzana okuphansi kanye nobumsulwa obukhulu.
Isisekelo sokusebenza kwe-PTFE O-ring sisekungeneni kwamakhemikhali okuphawulekayo kwezinto ezibonakalayo. I-PTFE ikhombisa ukumelana okucishe kube yindawo yonke ekuhlaselweni kwamakhemikhali, ingathinteki cishe yizo zonke izinhlobo zamakhemikhali ezimboni, izinyibilikisi, ama-asidi, kanye nezisekelo. Lokhu kwenza i-PTFE O-rings ibe yinto ebalulekile ezimbonini ezifana nokucubungula amakhemikhali, imithi, kanye namafutha negesi, lapho ukuchayeka ezintweni ezilimazayo kuyinto evamile khona. Amandla azo okugcina ubuqotho bazo ngaphansi kwezimo ezinjalo ezinolaka aqinisekisa ukuvalwa kwesikhathi eside, okungavuzi futhi athuthukisa ukuphepha nokuthembeka kwemishini ebalulekile.
Ngaphezu kwalokho, ama-PTFE O-rings anezinga lokushisa elibanzi lokusebenza, ngokuvamile aqala ku--200°C kuya ku-+260°C (-328°F kuya ku-+500°F). Leli khono lokushisa elibanzi liwavumela ukuthi asebenze kahle kokubili ekusetshenzisweni kwe-cryogenic kanye nokushisa okuphezulu, enikeza ukusebenza kokuvala okuqhubekayo ezimweni ezahlukahlukene zenqubo. I-coefficient ephansi kakhulu yokungqubuzana okuhlobene ne-PTFE kunciphisa ingozi yokunamathela noma ukuqaqamba ngesikhathi sokuhlanganiswa nokusebenza, kuyilapho futhi kunciphisa ukuguguleka kokubili i-O-ring kanye nezindawo zokuhlangana, okufaka isandla empilweni yesevisi ende kanye nokulula kokugcinwa.
Ama-PTFE O-rings asetshenziswa kabanzi ezinhlelweni zokuvala ezimile nezishintshashintshayo ezimbonini eziningi, okuhlanganisa izindiza, izimoto, ukucubungula ukudla neziphuzo, amadivayisi ezokwelapha, kanye nokukhiqizwa kwe-semiconductor. Ngenkathi i-PTFE engeyona i-virgin inikeza amakhono amahle kakhulu okuvala ajwayelekile, ama-compounds e-PTFE aguquliwe noma agcwalisiwe nawo ayatholakala. Lezi zinto zifaka izithasiselo ezifana nemicu yengilazi, ikhabhoni, i-graphite, noma ithusi ukuze kuthuthukiswe izakhiwo ezithile njengokumelana nokuguguleka, ukumelana nokukhukhuleka ngaphansi komthwalo, kanye nokuqhuba ukushisa, okuvumela ukusebenza kwe-O-ring ukuba kuhambisane nezidingo ezidinga kakhulu noma ezikhethekile. Ukukhethwa komklamo we-PTFE webanga elifanele kanye ne-O-ring kubalulekile ukuqinisekisa ukusebenza kahle kokuvala kanye nokuphila isikhathi eside kuhlelo lokusebenza oluhlosiwe.
