Plastic pall ring Diameter: 16, 25, 38, 50, 76mm PP, PE, PVDF, PVC, RPVC, ... ring: Plastic Pall rings can be applied to various of device of isolation, absorption, deadsorption, constant decompress tower such as ... )Heaping number (n/m3)Heaping weight (kg/m3)Φ1616×16×11880.91275112000141Φ2525×25×1.21750.902395350091Φ3838×38×1 ... 7676×76×2.6730.9294193060 Plastic polypropylene pall ring (16, 25, 50, 76mm)