... of Plastic pall ring:Plastic Pall ring can be applied to various of device of isolation, absorption, deadsorption, constant decompress ... able to offer these in a variety of plastic: PE, PP, RPP, PVC, CPVC, PVDF, PTFE, and HDPE.Size: 5/8" (16mm); 1" (25mm); 1.1 ... Φ2525×25×1.21750.902395350091Φ3838×38×1.41150.892201580071Φ5050×50×1.5930.90127650056Φ7676×76×2.6730.9294193060 Dia.5/8", 1", 1.5", 2", 3 ...