... as the separators fully support the sheet material.Dimensions-- Outside Diameter: 8”,12”,16”Material Of Constructions-- Depth filter sheet: Cellulose fibers, Natural diatomaceous ... earths, Perlite, Resins, and etc-- Core/Separator: Polypropylene(PP)-- Double O-ring or flat gasket: ... O-ring C004 0.4-0.6μm C Flat gasket C100 1-3μmC150 2-5μmC200 3-7μ ...