Compression Packing Seal Flexible Graphite Packing with Inconel Wire Square 5/16 In. Length 25 Ft Dull Gray Color Ambient Temp Range -100 to 800 F Max Temp in Steam 1200 F Max Pressure for Pumps NR PSI Max Pressure for Valves 4500 PSI pH Range 1 to 14 For Use In Valves Application Extreme High Pressure Steam for Petrochemical Chemical Power Generation Valves Expansion Joints and Gasketing