Compression Packing Seal Power Generation For Use In - Packing Seals Pumps Valves Square (in) 1/2 in Length 25 ft Flexible Graphite Lubrication - Packing Seals Yes Max Pressure for Pumps (PSI) 250 psi Max Pressure for Valves (PSI) 2 500 psi Shiny Gray Color Ambient Temp Range (F) -450 to 650 Max Temp in Steam (F) 1200 Max Shaft Speed (ft/min) 4 000 fpm pH Range 0 to 14 Features High Temperature Packing That Can Be Used In Pumps and Steam Valves