... , RPP, PVC, CPVC, PVDF, PTFE, HDPE Size: 5/8", 1", 1.5", 2", 3" Use as tower packing Plastic pall ring:PE pall ... environmental protection, etc.Technical data of Plastic pall ring: Diameter (Inch)Dimension d×h×δ (mm)Specific surface area (m2/m3)Void ... -1 )Heaping number (n/m3)Heaping weight (kg/m3)5/8 "16×16×11880.912751120001411 "25×25×1.21750.9023953500911.5 ...