"Polytef"@en . . "Ethene, tetrafluoro-, homopolymer"@en . "Politef"@en . "TFE"@en . . "D011138" . . "C0032611" . . "FEP"@en . "Polytetrafluoroethylene"@en . "PTFE"@en . . "Polytetrafluoroethylene"@en .