All repair and maintenance tasks shown should be done by professionals only. Please do not try this at home or if not qualified by professional education. Always follow car manufacturer's instructions. Limitation of liability.

Silicone Flange Sealant

for Flexible Flanges

Gaskets are used to prevent leakage of fluids or gases by forming impervious barriers. For successful gasketing, it is necessary for the seal to remain intact, and leak-free over a long period of time. The gasket must be resistant to fluids and/or gases, and withstand the operating temperatures and pressures to which it is subjected.

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Flexible flanges are used where movement can occur – the silicone adhesive allows for sufficient flexibility of the bonded flange. They are suitable for large gap applications and assemblies (> 0.25 mm).



Apply LOCTITE SF 7200 on old gasketing adhesive and use a wood or plastic scraper to remove residues. Remove burrs. For thicker layers, several applications may be necessary. Ensure compliance with application instructions on the technical data sheet.



LOCTITE SF 7063 recommended to degrease and clean surfaces prior to applying adhesive.


Adhesive application

Apply a continuous bead onto the chamfered flange surface around dowel and bolt holes.



Assemble flanges and tighten bolts as soon as possible.

If disassembly is needed, remove the bolts with standard hand tools. Use jacking-screws or cast-integral bosses and recesses to prise flanges apart.

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