PolytetrafluoroethyleneKo te Teflon, PTFE rānei, e mōhiotia whānuitia ana ko te "kingi kirihou", he matū pūmua i hangaia mai i te tetrafluoroethylene mā te whakapūmua, he tino pai te pumau matū, te ātete ki te waikura, te hiri, te whakahinuhinu teitei, te kore-matao, te whakamarumaru hiko me te manawanui pai ki te koroheketanga.

He ngāwari te PTFE ki te rere makariri, ki te ngokingoki hoki i raro i te pēhanga me te pāmahana tiketike, nō reira e whakamahia whānuitia ana mō te pēhanga iti, te pāmahana waenga, te waikura kaha, ā, kāore e tukua kia poke te reo, pērā i te waikawa kaha, te kawakore, te halogen, te rongoā me ētahi atu. Ko te pāmahana mahi haumaru ko te 150℃, ā, kei raro iho i te 1MPa te pēhanga. Ka piki ake te kaha o te PTFE kua whakakīia, engari kāore e taea te neke ake i te pāmahana whakamahinga i te 200℃, ki te kore ka heke te ātete waikura. Ko te pēhanga whakamahinga mōrahi o te takai PTFE kāore e neke ake i te 2MPa.

Nā te pikinga o te pāmahana, ka ngokingoki te rauemi, ka heke te pēhanga hiri. Ahakoa he pai te pāmahana, ka roa te wā, ka heke te ahotea pēhanga o te mata hiri, ka hua ake he "āhua whakangāwari ahotea". Ka puta tēnei āhuatanga i roto i ngā momo gaskets katoa, engari he nui ake te kino o te whakangāwari ahotea o te papa PTFE, ā, me tūpato.

He iti te tauwehenga waku o te PTFE (he nui ake te ahotea pēhanga i te 4MPa, ko te tauwehenga waku he 0.035 ~ 0.04), ā, he ngāwari te paheke ki waho o te gasket i te wā e whakakīia ana, nō reira he pai ake te whakamahi i te mata flange kōpiko me te kōpiko. Mena ka whakamahia te flange papatahi, ka taea te pa atu ki te diameter o waho o te gasket ki te pūtu hei ārai i te paheke o te gasket ki waho.

Nā te mea ka whakakorikoria te taputapu arai karāhe i muri i te rehu i te paparanga enamel ki te mata whakarewa, he tino pakarukaru te paparanga paninga, ā, me te rehu koretake me te rere o te paparanga paninga, he ngoikore te papatahi o te mata o te flange. He ngāwari te pakaru o te paparanga paninga o te konganuku, nō reira e taunakihia ana kia whakamahia te rauemi matua i hangaia ki te papa asbestos me te rapa PTFE. He ngāwari te whakauru i te tākai ki te mata flange, ā, he ātete ki te waikura, ā, he pai te pānga whakamahi.

He maha ngā wheketere i roto i te pāmahana, te pēhanga kāore i te teitei i roto i te reo waikura kaha, ka whakamahia te whitiki rauemi mata PTFE kua takaihia ki te pereti rapa asbestos, he maha ngā wā ka wetewetehia ngā poka wai me ngā paipa. Nā te mea he tino watea te hanga me te whakamahi, he tino rongonui.