Paipi yamafuta amafuta imakhala ndi zigawo zitatu: zigawo zamkati, zowonjezera zowonjezera komanso zakunja。Wosanjikiza wamkati womwe umagwiritsidwa ntchito poopereka mafuta mwachindunji omwe amapangidwa ndi mphira wopangidwa ndi SBR kapena NBR wokhala ndi kukana kwamafuta kuti apititse patsogolo kuyendetsa bwino。Chomangira chowonjezeracho chimapangidwa ndi ulusi wokhazikika wokhazikika kapena woluka ulusi。Zimagwira ntchito kuyimilira kukakamizidwa。Chosanjikiza chakunja chimapangidwa ndi mphira wa SBR kapena NBR womwe umalimbana ndi ukalamba, umakhala ndi kusinthasintha kwabwino komanso kupindika kwabwino。