O-rings

Ma PTFE O-rings nzintu zizungulukide zyakujala zilimbuli doughnut, zyakabambwa kabotu-kabotu kuzwa ku PTFE kuti zipe kujala kusyomeka akukazyigwa amakemikalu mumilimo myiingi yamafakitali. Kubelesya bube bulibedelede bwa PTFE, aaya ma O-rings ngaasalalwa kabotu aawo notubeleka mumasena aajisi makemikalu mayumu, kupya kapati, alimwi akubelesya zintu ziyandika kuvwundauka kusyoonto alimwi akusalala kapati.

Ibbwe lyakukkona lyakubeleka kwa PTFE O-ring lili mukubula nguzu kwamakemikalu kwachintu eechi. PTFE itondezya kukazyigwa koonse koonse kukulwanwa amakemikalu, kakunyina kujatikizyigwa amakemikalu woonse, ma solvent, ma asidi, ama base. Eezi zipa kuti ma PTFE O-rings kaayandikana loko mumakkampani aali mbuli kupanga misamu, misamu, amafuta amuwo, ooko kujatikizyigwa azintu zikonzya kubola nkokujanika. Kukonzya kwabo kubamba kusyomeka kwabo mubukkale bukatazya buliboobu kupa kuti kube kujala kwachiindi chilamfu, kakunyina kuvwundauka mpawo kupa kuti zibelesyo ziyandikana kazikwabilidwe akusyomeka.

Kuya kunembo, PTFE O-rings ilijisi kupya kupati, kanjikanji kuzwa ku -200°C kusikila ku +260°C (-328°F kusikila ku +500°F). Ooku kupya kupati kupa kuti zibeleke obotu mulizyoonse zyobile zyakubelesya kupya akupya kapati, kupa kuti kube kujala kutamani mubukkale bwiindene-indene. Ikuzwangana kusyoonto kapati kwa PTFE kulacesya ntenda yakunamatika naa kupya muchiindi chakubunganya akubeleka, mpawo akucheesya kubola kwa O-ring antoomwe abusena bwakujatana, kupa kuti kube buumi bulamfwu bwakubeleka akuubauba kubamba.

Ma PTFE O-rings alabelesyegwa kapati mukujala zintu zitazungaani alimwi azintu zitazungaani mumakwebo manji, kubikkilizya amulengalenga, myootokala, kubamba zyakulya azyakunywa, zibelesyo zyabusilisi, alimwi akupanga ma semiconductor. Nikuba kuti PTFE iitakwe chintu ilakonzya kujala kabotu, misamu ya PTFE yakacincwa naa iizwide ilajanika. Eezyi zintu zibikkilizya zintu zilimbuli nsinga zyagilazi, kaboni, graphite, naa bronze kuti ziyungizye zintu zimwi zilimbuli kukaka kusama, kukaka kuzungaana muchiindi chakunyamuna, akukwabilila kupya, kupa kuti O-ring ichite obotu kweendelana aziyandikana. Kusala kwa PTFE grade yeelede antoomwe a O-ring design nchintu chipati loko kuchitila kuti kube kujala kubotu akupona kwachiindi chilamfu mumulimo uuyanda kubelesegwa.