Feature Material: PTFE Membrance laminated on various reliable filter fabrics (PET,Acrylic,PPS, Nomex,PTFE and Glassfiber) With homogeneous pore size distribution high collection efficiency and air permeability,water and oil resistant a breathable filtration material Application Steel Metallurgy Nonferrous metal Firepower electricity generation Cement Coke Fireproof material and other coal powered fields for dust removal Bitumen Specification: Material Polyester Weight(g/m2) 500 Thickness(mm) 1.8 Air Permeability (m3/m2/min) 16 Tensile strength (n/5 x 20cm) Warp <30 Weft <45 Elongation (%) Warp 1100 Weft 1500 Working temperature Continues ¡Ü130 Instant 150 Finishing Treatment Singeing,Het setting,Calendering, PTFE Coated PTFE Membrance can be used with just about every filter medium. Acrylic,PPS, P84 and Nomex all can be coated eptfe membrance as base filter media.