PTFE teepu nwere oké ala ọnụọgụ nke esemokwu, ezi chemical-eguzogide, na ezi okpomọkụ na-eguzogide. 
PTFE teepu nwere oke ala onuogu nke esemokwu, ezi chemical-eguzogide, na ezi okpomoku na-eguzogide. 