... rubber, nitric rubber, PTFE5. Coarse cartridge material: stainless steel (frame and mesh)6. Cartridge Material: titanium sintered filter, stainless steel folding filter, PTFE folded filter, polypropylene ... a clear indication of name, DN, material, press, flange standard, filter accuracy and technical data of stainless steel.Filter mediumWater, oil, gas, nitric ...