LUBRIZOL® 5323A is a corrosion inhibitor additive recommended for use in semi-synthetic and synthetic metalworking fluids to reduce or prevent corrosion of ferrous metals. This water-soluble additive provides excellent antirust protection and inhibits ferrous corrosion as measured by industry standard tests. LUBRIZOL® 5323A has very low foaming tendencies making it suitable for applications involving machinery where foaming can cause operational issues.