NBR (nitrile -butadiene rubber) uye PVC (Poly Vinyl Chloride) ndiyo huru musanganiswa zvinhu mupurasitiki-rabha furo indasitiri.NBR/PVC musanganiswa ine ese PVC's ficha ozone kuramba uye NBR's inoratidzira mafuta resistivity kunze kwekuita kwayo kwekuyambuka, pamwe nekushomeka kwemoto.Inoshandawo nemidziyo yakanaka yemuviri.Nekuda kwekuwanikwa uye kusingadhure PVC seyakagadzirwa, furo rakasanganiswa rakadai rinoshandiswa zvakanyanya muminda yakawanda.