Henkel Adhesive Technologies

Henkel Adhesive Technologies

Gasketing sealants


Black, flexible, RTV silicone sealant with excellent motor-oil resistance

Pasty, 1-part, silicone adhesive sealant which cures at room temperature to form a tough, flexible rubber gasket with excellent oil resistance.

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

Part no. (SKU/IDH) 234609
LOCTITE® SI 598, 70 ml Tube

Size Please make your selection 70 ml

Packaging type Please make your selection Tube



LOCTITE® SI 598 is a metallic black, 1-part RTV (room temperature vulcanizing) oxime silicone paste sealant. It cures at room temperature on exposure to moisture in the air to form a tough, flexible, silicone rubber gasket. Its thixotropic nature allows for easy flow dispensing, while preventing the migration of liquid product once applied to the part. It has excellent resistance to motor oils and can withstand operating temperatures from -65°F to 500°F (-54°C to 260°C ). It resists ageing, weathering, and thermal cycling without hardening, shrinking or cracking.



Cure type:

Room temperature vulcanization (RTV) cure

Fixture time:

30.0 min.

Physical form:


Storage temperature:

8.0 °C - 21.0 °C

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