... Long life time 3,Long dust cleaning cycle Fiberglass filter materialProduct Name Fiberglass\PTFE MembranePhysical PropertiesFiber FiberglassScrim FiberglassMembrane ePTFE MembraneWeight/Tolerance ... is used to sew dust filter bags such as PTFE, fiberglass, PPS, Nomex, P84 and so on.PTFE membrane can ... merket, and serve for international customers. Excellent Abrasion Resistance Fiberglass filter material