APG 11750187 3/16" Square Braided Graphite Filament Packing

Interbraid construction. Manufactured from pure graphite yarns impregnated with a fine submicron powder of inorganic graphite. A surface lubricant is applied to prevent wicking and to provide a bearing film between the shaft and the packing material. Recommended for valves, high speed shafts, agitator shafts, reciprocating rods and plunger rods wherever minimum product leakage is required under severe service conditions. For strong acids and strong caustics throughout the full pH range. It is virtually inert. Not recommended for oleum, fuming nitric acid and fluorine. Temperatures up to 6,000°F/3,316°C in non-oxidizing agents, 1200°F/649°C in steam, and 800°F/427°C in oxidizers. Use wherever downtime costs are too great to permit the use of mechanical seal replacement. Installed and maintained properly, this packing can run on little or no leakage.