LOCTITE flange sealants are high-performance sealing solutions designed to seal rigid metal flanges and prevent leakage of oils, water, coolants, and other industrial fluids. They form a reliable seal between mating surfaces, helping resist vibration, pressure, and thermal changes while reducing the need for conventional gaskets in suitable applications. Ideal for industrial machinery, automotive equipment, pumps, compressors, and engine assemblies, LOCTITE flange sealants provide dependable sealing and long-lasting performance. Choose the right product based on flange material, gap size, fluid compatibility, pressure, and temperature requirements.

Leak-Free Containment

Zero Gasket Creep

Micro-Gap Conformity

Cures anaerobically in the absence of air to create an impervious solid barrier resistant to fuel, oil, coolant, and hydraulic fluids.

Replaces traditional pre-cut gaskets with unitized metal-to-metal contact, preventing dynamic bolt loosening and flange deflection.

Flows seamlessly into microscopic surface imperfections up to 0.5 mm, ensuring complete surface contact and uniform stress transmission.

Selecting the Right Formulation

Flange Rigidity

Gap Dimension

Operating Exposure

Determine whether the assembly comprises rigid cast iron and steel housings requiring high-strength anaerobic cures, or semi-rigid aluminum covers needing flexible thixotropic gels.

Assess maximum machine tolerances and surface finish. Select low-viscosity formulas for tight machined joints or paste consistency for gaps up to 0.50 mm.

Verify continuous operating temperatures from -55°C to +200°C alongside exposure to harsh petroleum hydrocarbons, synthetic lubricants, and glycol coolants.