... 50,76mm plastic pall ring PP, PE, PVDF, PVC, RPVC, RPP plastic pall ring Use as tower packing ... pall ring, PP pall ring, RPP pall ring, PVC pall ring, CPVC pall ring, PVDF pall ring ... 3. Small specific gravity.4. Resist chemical corrosion.5. High mass transfer efficiency.6. Resist nesting ... seperation of isooctane/ methylbenzene.Material: PE, PP, RPP, PVC, CPVC, PVDF. Size: 5/8" (16mm); 1" (25mm); 1.1/2" ...