Fiberglass string wound filter cartridge for chemical industry Detailed Product Description MaterialMembrane:PP,cotton,glass fiberCore:PP,stainless steelO ring/Gasket:Silicone, EPDM, Buna , Viton, TeflonSpecificationsPore size(um):1,5,10,20,30,50,100,150 MicronOuter Diameter(OD):60mm,61mm,62mm,63mm,115mm(can be decided by..