... ring. Size: 16, 25, 38, 50,76mm. Material: PE, PP, RPP, PVC, CPVC, PVDF, PTFE, HDPE. Use as tower packing. Plastic pall ring ... :PE pall ring, PP pall ring, RPP pall ring, PVC pall ring, CPVC pall ring, PVDF pall ring, PTFE pall ring, HDPE pall ring.Plastic Pall Ring ... chloride (CPVC) and polyvinylidene flouride (PVDF). Plastic Pall Ring has features such as high void ratio, low pressure drop ...