GRAPHALLOY, graphite/metal alloy is a self-lubricating bearing material used by designers and maintaince engineers to solve the toughest pump applications-from new installations to retrofitting existing units.
GRAPHALLOY is non-galling, corrosion resistant, dimensionally stable and performs at temperatures from cryogenic to higher than 1000^o F.
GRAPHALLOY allows pumps to servive "run dry" conditions, slow roll operation and frequent stops/start where metal and plastics fail.
GRAPHALLOY works in low lubricity, corrosive and sour liquids.The use of GRAPHALLOY pump wear parts results in lower operating and repair costs and provides assurance against catastrophic failures.

Handles low lubricity fluids such as light hydrocarbons, liquefied gases and hot water in which metallic bearings wear excessively.

Runs at temperatures well above the limit of plastic-even in molten metals above 1000^o F and survives thermal shocks of 22 degrees per second down to ambient.

Perorms in cryogenic temperatures to -450^o F where other materials suffer embrittlement and seizure.

Survives "loss of pumpage" operation for prolonged periods without either damage or preventing pump re-start.

Resists attack by most corrosive liquids including sulfuric acid, chlorine water, and caustics.

Permits closer running clearances between rotating parts resulting in higher pump efficiency at lower shaft vibration.

Maintains dimensional stability when submerged, under static pressure loading, and over wide temperature swings, providing constant running clearance for all operating conditions.

Pumps with mechanical seals have frequent failures due to excessive shaft vibration. Upgrades using GRAPHALLOY case rings and close clearance throat bushings provide reduced vibration levels-in one specific case from 1.2 to less than .05 ips. The result is fewer seal and bearing failures and increased MTBF. This upgrade is recognized in the current API 682 standard. GRAPHALLOY more than meets this specification.