LOCTITE® 518 is a general purpose, primerless, semi-flexible, form-in-place anaerobic flange sealant. It cures – even in the presence of minor surface contaminants – to seal close fitting joints between rigid metal flanges, and will flex with minor flange movements. It provides resistance to low pressures immediately after assembly of flanges, and is ideal for use on aluminum substrates where very good flexibility is needed. Typically used as a form-in-place gasket for pumps, thermostats, compressors, transmission housings, and axle covers, it works on active metals (e.g., mild steel) as well as passive substrates, such as aluminum with low copper content. Gap performance up to 0.25 mm (0.01").
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General purpose, semi-flexible sealant for rigid flanges
Features
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Semi-flexible anaerobic flange sealant
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Adapts to surface irregularities and gap fill up to 0.25 mm (0.01")
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Forms an instant low-pressure seal
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Cures on inactive surfaces without primer
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NSF registered
