Olugoye lwa PTFE olw’ebbugumu eringi luwa obugumu obw’enjawulo obw’eddagala, okugumira asidi ez’amaanyi, alkali, ebizimbulukusa ebiramu, ne ggaasi ezivunda. Ekitundu kino kiraga mu bujjuvu ebintu byayo ebigumira, obuzibu (ebyuma bya alkali ebisaanuuse, ebirungo ebikola fluorinating eby’amaanyi), n’ensonga enkulu nga ebbugumu, okusengejja, n’okunyigirizibwa kw’ebyuma.

Okufukirira kwa PTFE tekukoma ku lugoye lwa fiberglass. Ekiwandiiko kino kyanjula 7 alternative substrates – aramid, carbon fiber, PBI, porous metal, graphite, asbestos (phased out), ne ceramic fillers – n’enkola yaabwe ebifaananyi, ebirungi, obuzibu, n’okukozesebwa okukulu.

Ekiwandiiko kino kinnyonnyola lwaki olugoye lwa fiberglass olutaliimu alkali lwe lusinga okwettanirwa olugoye olwa PTFE olw’ebbugumu eringi. Kikwata ku kukwatagana kw’eddagala okuyita mu bikozesebwa ebiyunga silane n’ebintu ebikulu eby’omubiri nga okutebenkera kw’ebbugumu, okunyweza mu bipimo, n’okuziyiza okukulukuta – okukakasa okukola okumala ebbanga eddene mu mbeera enkambwe.