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Excelguard 504 is a solvent deposited water displacing corrosion preventative. Excelguard 504 is a blend of dewatering agents, corrosion inhibitors, hydrocarbon mineral oils, synthetic sulphonates and hydrocarbon solvents. It offers medium to long term protection of ferrous and aluminium alloy components. It leaves a thick oily anti corrosion film when applied. It is ideally suited to inter-process protection after machining.