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Henkel Adhesive Technologies

Henkel Adhesive Technologies

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Gasketing sealants


High-temperature silicone gasketing sealant for flexible flanges

Low strength, 1-part silicone sealant ideal for high temperature gasketing applications. Great on flexible flanges with machined or cast surfaces.

All marks used are trademarks and/or registered trademarks of Henkel and its affiliates in the US, Germany, and elsewhere.

Part no. (SKU/IDH)

LOCTITE® SI 5920, 300 ml Standard Cartridge



If you are looking for a high-temperature resistant, moisture-curing sealant for corrosion-sensitive applications, LOCTITE® SI 5920 could be a great fit. Its thixotropic nature allows for easy flow dispensing, while preventing the migration of liquid product once applied to the part. It is ideal for sealing flexible flanges with machined or cast surfaces and is particularly suitable for high temperature applications up to 350°C (662°F). It is also used for electrical insulating applications.

Product category:

Gasketing sealants




Cure speed vs time, 24.0 hr.:

2.5 mm

Extrusion rate:

275.0 g/min.

Gap fill:

1.0 mm

Lab shear strength:

1.4 N/mm²

Number of components:

1 part

Recommended for use with:


Storage temperature:

8.0 °C - 21.0 °C

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