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Henkel Adhesive Technologies

Henkel Adhesive Technologies

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Gasketing sealants


Blue, acetoxy silicone paste for gasket replacement / dressing

This acetoxy silicone paste for stamped flanges cures on exposure to moisture in the air to form a tough, flexible rubber gasket.

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

Part no. (SKU/IDH) 270642
LOCTITE® SI 5015, 80 ml Tube

Size Please make your selection 80 ml

Packaging type Please make your selection Tube



LOCTITE® SI 5015 is a blue, 1-part RTV (room temperature vulcanizing) acetoxy silicone paste, which cures at room temperature on exposure to moisture in the air to form a tough, flexible, silicone rubber gasket. This product resists aging, weathering, and thermal cycling without hardening, shrinking or cracking. Ideal for stamped parts and safe for use with automotive oxygen sensors. Typical applications include valve covers, timing gear covers, differential covers, oil pans, transmission pans, water pumps, and thermostat housings. This product is typically used in applications with an operating range of -54°C to 204°C (-65°F to 400°F).

Product category:

Gasketing sealants


Chemical basis / base:

Acetoxy silicone



Cure type:

Room temperature vulcanization (RTV) cure

Key characteristics:

Flexible,No mix

Number of components:

1 part

Physical form:


Specific gravity, @ 25.0 °C:


Storage temperature:

8.0 °C - 21.0 °C

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