... and PE plastic ring collar 3.plaining weaving Polyester liquid filter bag size:7*16,7*32,4*8.25,4*14 ... ,polyester,teflonfilter bag collar material:stainless steel ring,galvanized ring and polypropylene plastic ring.filteration precision:1~200µm liquid filter core ... bags, check the sealing ring is installed properly4. By process liquid (such as water) wet "0" type circle5. To plastic packaging ...