Compression Packing Seal Chemical General Service Waste/Water Treatment For Use In - Packing Seals Pumps Square (in) 3/4 in Length 25 ft 100 Percent GFO(TM) Expanded PTFE with Graphite Lubrication - Packing Seals Yes Max Pressure for Pumps (PSI) 300 psi Max Pressure for Valves (PSI) NR Ambient Temp Range (F) -400 to 550 Max Temp in Steam (F) NR Max Shaft Speed (ft/min) 4 300 fpm pH Range 0 to 14