Re ba bang ba baeta-pele ba marakeng ho fana ka liphaephe tsa PTFE liPipong. Liphalae tsa rona tsa PTFE tse hlomiloeng li tsejoa har'a bareki ba rona. Boima ba tekanyo ea Pente ea PTFE ke 3 mm, leha ho le joalo re ka etsa Lining of thickness hammoho le tlhokahalo ea bareki ba rona. The Lining e tla lumellana le ASTM F1545. Re ka fana ka liphaephe ka mahlakoreng a mabeli a tsitsitseng / a hlephileng ho ea ka se hlokahalang ho bareki.