- Conventional wound filter from PP or cotton yarn- No leakage of fiber from filter cartridge- Nominal/absolute micro ratingsMaterials Core Polypropylene / 304,316 SS Yarn Polypropylene / CottonApplications See to applications guideCartridge specifications I.D/O.D 28mm/ 64mm Length 10" - 40" Grade 0.5micron - 100micronCartridge style DOE 222 O-Ring/Flat 222 O-Ring/Fin