... at high temperature 3,Good chemical resistance teflon ptfe filament yarn SPECIFICATION for PTFE FILAMENT YARNCLASIFICATIONPTFE Polymer MaterialCURRENT REVISION8/5/ ... 2011RAW MATERIAL100%PTFEPRICE$60.11/kg FOB ShanghaiDESCRIPTIONPTFE Filament yarn PACKAGINGa roll in a plastic, and Then white in ... is used to sew dust filter bags such as PTFE, fiberglass, PPS, Nomex, P84 and so on.PTFE membrane can ...