... strength.Filament fiber (yarn) can be twined and twisted into PTFE sewing thread , a high-quality sewing thread for high temperature ... : 5%, Continuous Length : >4500m Fiber →→ Dust filter Cloth →→ PTFE Sewing Thrad →→ ePTFE Membrane →→ Dust Filter Bag Where to use? Applications ... showed on our website do you need? PTFE fiber, PTFE Sewing thread, PTFE membrane or dust filter cloth and dust filter ...