LOCTITE® 518 is a versatile anaerobic flange sealant designed for rigid metal assemblies. It seals close-fitting joints between metal faces and flanges, providing a highly effective barrier against leakages of fluids or gases.
LOCTITE® 518 is specifically engineered for sealing close-fitting metal surfaces in the presence of slight surface imperfections. When confined between two metal flanges, it cures in the absence of air and creates a flexible, pressure-resistant seal. This product prevents leakage and ensures reliable performance in applications involving compressed gases or liquids. LOCTITE® 518 remains effective on most active metals (iron, steel, copper) and even on passive substrates like stainless steel or plated surfaces, albeit with a longer cure time. Its flexibility to seal slightly contaminated surfaces, such as those with oil residue, makes it harsh industrial environments.
Colour: Red
Fixture time: 25 minutes on steel; faster on active metals
Temperature Range: -55°C to +150°C
Viscosity: 7000-15000 mPa.s
Gap Fill: Up to 0.25mm
Shear strength: 8-12N/mm²
Shelf Life: 24 months
Primary Chemistry: Methacrylate ester
Surface imperfections Leakage Prevention Oil Contamination
Sealing Engine housings Pump flanges Gearbox Assemblies Transmission assemblies Oil Pans Water pumps Compressed Air Systems Industrial Compressors Hydraulic and Pneumatic systems Electric motor housing Heavy equipment Wind Power Turbine Marine applications Aerospace systems
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