... ring Diameter: 5/8", 1", 1.5", 2", 3" PP, PE, PVDF, PVC, RPVC, RPP plastic pall ring Customization available ... Plastic pall ring:PE pall ring, PP pall ring, RPP pall ring, PVC pall ring, CPVC ... pall ring.Plastic pall ring is made from polyethylene (PE), polypropylene (PP), reinforced polypropylene (RPP), polyvinyl chloride (PVC), chloridized polyvinyl chloride (CPVC) ...