Waterproof breathable microporous tubular film casing is a kind of pure E-PTFE structure, with breathable waterproof oil proof performance, can according to the request to cut into arbitrary length, diameter can be in accordance with the drawings of professional custom-made tube, 7-25mmrange, material: PTFE; wall thickness: 0.5mm~1.5mm, gas flux (max):150L/m2.s (^p=200pa), scope of application: waterproof breathablewaterproof breathable membrane valve, degassing, the oxygen sensor forpipe, pipe type gas-liquid separation device.