Plastic pall ring Material: PE, PP, RPP, PVC, CPVC, PVDF, PTFE, HDPE Size: 5/8", 1", 1.5", 2", 3" Use as ... tower packing Plastic pall ring:PE pall ring, PP pall ring, RPP ... resistant and chemical corrosion resistant plastics, including polyethylene (PE), polypropylene (PP), reinforced polypropylene (RPP), polyvinyl chloride (PVC), chloridized polyvinyl chloride ...