Kugwiritsira ntchito mankhwala a mphira sikungasamalike kuchokera pa chitukuko cha malonda. Mukumanga mafakitale, kutsekedwa kwa mapepala a mphira kungachepetse phokoso lambiri, ndipo panthawi imodzimodziyo, likhoza kuwonjezera moyo wa makina ndi zigawo zikuluzikulu.
Graphite gaskets angathenso kutchulidwa kuti: graphite inalimbikitsa gaskets, graphite gulu gaskets, graphite mkulu-mphamvu gaskets, ndi m'mphepete graphite gaskets.
Vuto lakale la kusindikiza kwa raba nthawi zonse linali vuto limene linayambitsa makampani osindikizira. Pakalipano, kugwiritsa ntchito mphira mu makina osindikizirapo akadali ochuluka kwambiri, kotero kuthetsa vuto la ukalamba wa raba akadali lofunikira kwambiri pa chitukuko cha makampani osindikizira.
Zida zamakono ndizofala kwambiri m'miyoyo yathu, ndipo kwa nthawi yaitali timapeza kuti zisindikizo za mphira ndi zovuta kusunga, makamaka m'chilimwe. Kwa nthawi yayitali pa malo otentha kwambiri, vuto lalikulu lomwe liri ndi zisindikizo za mphira ndi kusungunuka deformation.
Njira yowonjezera ya PTFE gasket ndi yosiyana malinga ndi mtundu wa makina ndi mtundu wa makina, koma njira zowonjezera zili zofanana.
PTFE, yofufuzidwa monga F4 (PTFE), imadziwika ngati mfumu ya pulasitiki. Ndi katundu wa pulasitiki wokhala ndi ntchito zabwino kwambiri padziko lapansi lero. Zili bwino kwambiri kutentha, kupatula fluorine pa mkulu kutentha ndi alkali zitsulo mu zotentha dziko ndi chlorine trifluoride.
