Compression Packing Seal Power Generation For Use In - Packing Seals Pumps Valves Square (in) 7/16 in Length 5 ft Carbon Packing with Graphite (Continuous Filament) Lubrication - Packing Seals Yes Max Pressure for Pumps (PSI) 500 psi Max Pressure for Valves (PSI) 2 500 psi Black Color Ambient Temp Range (F) 650 Max Temp in Steam (F) 1000 Max Shaft Speed (ft/min) 4 000 fpm pH Range 0 to 14 Features Carbon Is Good For High Temperatures and High Shaft Speeds