Rugwaro rwePTFE yekurapa (Polytetrafluoroethylene)mudziyo wekurapa wakasarudzika unoshandiswa mumabasa akasiyana-siyana asingapindi zvakanyanya kuti upinde mutsinga dzeropa, migero, kana zvimwe zvimiro zvemuviri. PTFE, fluoropolymer yakagadzirwa, inozivikanwa nekunyorova kwayo kwakanyanya, kusabatwa nemakemikari, uye kuenderana nehupenyu, zvichiita kuti ive chinhu chakakodzera chekufukidza waya dzekufambisa. Waya dzekufambisa dzakafukidzwa nePTFE dzakagadzirirwa kupa kufamba kwakanaka, kuderedza kukweshana, uye kuderedza kukuvara kwenyama panguva yekurapwa.