... filter bags from damage in seams. Nylon Monofilament Filter BagSpecificationMaterial: choice Nylon (polyamide) or polyester monofilament/ multifilament meshes.Micron rating:25-1250Construction: ... MaterialRing ConstructionNeedle Felt Polyester (PE)Needle Felt Polypropylene (PP)Nylon Monofilament (NMO)1,5,10,25,50,75,80,100,125 ... ,250,300,400,600,800,1250, 2500 PP10P2SSSS Nylon Monofilament Filter Bag