... ,7*32,4*8.25,4*14 inch material: polypropylene,polyester,teflonfilter bag collar material:stainless steel ring,galvanized ring and ... sealing ring is installed properly4. By process liquid (such as water) wet "0" type circle5. To plastic packaging as protection, holding ... in the strainer filtering, filter into a antibacterial agent of water (such as 10ppm sodium chlorate solution or 2% of hydrogen ...