... an advance on the Raschig Ring, Plastic Pall Ring has similar cylindrical dimensions but has two rows of punched out holes ... plant, decarbonization plant, separation of ethylbenzene, seperation of isooctane/ methylbenzene.Material: PE, PP, RPP, PVC, CPVC, PVDF. Size: 5/8" (16mm ... .6730.9294193060 16, 25, 38, 50,76mm plastic pall ring (Material: PE, PP, RPP, PVC, CPVC, PVDF, PTFE, HDPE ...