... air flow \PTFE MembraneProduct Name FMS\PTFE Membrane FiltrationFiber Fiberglass , Organic fiberScrim Fiberglass FabricMembrane ePTFEWeight/Tolerance (g/m2) 800 Thickness/Tolerance (mm ... is used to sew dust filter bags such as PTFE, fiberglass, PPS, Nomex, P84 and so on.PTFE membrane can be ...