... professional manufacture 2.ISO9001:2008 3.size:16, 25, 38, 50, 76mm 4.PP,PE,RPP,PVC,RPVC,PVDF 16,25 ... ,38,50,76mm Plastic Pall RingMaterials heat resistant and chemical corrosion resistant ... .960.89-0.910.93-0.941.32-1.441.50-1.541.75-1.78Operating Temp. (°C)90>100> ... *25*1.221038*38*1.414089135005438*38*1.414050*50*1.51009065005150*50*1.510076*76*2.6739219305876*76*2.673 16 ...