Okukola kalenda – okunyiga olugoye olusiigiddwa PTFE wakati w’ebiwujjo by’endabirwamu ebibuguma ku 360-380°C – kikyusa nnyo enkula y’okungulu, eby’obugagga by’okufulumya, obutayita mu mazzi, n’enkola y’ebyuma. Kikendeeza ku bukaluba okuva ku Ra 0.5-1.0 μm okutuuka ku <0.05 μm, kisiba ebituli bya ppini, kitereeza okuziyiza okwambala, naye kikendeeza ku maanyi g’okukutuka n’okukyukakyuka. Kyetaagisa nnyo ku layers ezifulumya n’okuziyiza amasannyalaze.

PTFE olugoye olw’ebbugumu eringi (PTFE membrane material) lwe lusinga okulondebwa mu nzimba y’okusika. Ebirungi ebikulu: obulamu obw’ebweru obw’emyaka 30+, okweyonja kungulu (amazzi g’enkuba ganaaza obucaafu), okutambuza ekitangaala ekigonvu (6-13%), ekipimo ky’omuliro ekya Class A, n’amaanyi agalinga ag’ekyuma wansi wa kkiro 1.5/m2. Ekozesebwa mu bisaawe, ebisaawe by’ennyonyi, n’ebizimbe ebimanyiddwa ennyo mu nsi yonna.

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.