Description: Graphalloy is graphite/metal alloy, a self-lubricating bearing material used by designers and maintenance engineers. Graphalloy is non-galling, corrosion resistant, and dimensionally stable material. It performs at temperatures from cryogenic to higher than 1000?F. Graphalloy allows pumps to survive 'Run Dry' conditions, slow roll operation and frequent stops/starts where metal and plastics fail. Graphalloy works in low lubricity, corrosive and sour liquids. The self lubricating feature helps to handle low lubricity fluids such light hydro-carbons, liquefied gases and hot water in which metallic bearings wear excessively. It runs at temperatures well above the limit of plastic-even in molten metals above 525?C (1000?F) and survives thermal shocks of 22? per second down ambient. It performs in cryogenic temperatures to - 450? where other materials suffer embitterment and seizure. It survives 'loss of pumpage' operation for prolonged periods without either damage or preventing pump re-start. It resists attack by most corrosive liquids including sulphuric acid; chlorine water, and caustics; non-galling: permits closer running clearances between rotating parts resulting in higher pump efficiency and lower shall vibration. It maintains dimensional stability when submerged, under static pressure loading, and over wide temperature swings, providing constant running clearance for all operating conditions.
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