Henkel Adhesive Technologies

Henkel Adhesive Technologies

Electrically conductive adhesives


Flexible and shielding electrically conductive sealant and adhesive

This flexible, silicone-based electrically conductive sealant and adhesive is perfect for electromagnetic interference (EMI) and radio frequency (RF) shielding.

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Part no. (SKU/IDH)

LOCTITE® SI 5421, 50 ml Standard Cartridge



LOCTITE® SI 5421 is a room-temperature cure, 1-part formed-in-place silicone adhesive. Ideal for automotive sensor bonding and gasketing of EMI/RF shielded enclosures, it creates an electrically conductive bond for reliable shielding and adhesion performance. Expect low stress and high flexibility.



Cure schedule, @ 25.0 °C:

7.0 day

Cure type:

Room temperature vulcanization (RTV) cure

Number of components:

1 part

Shear strength, Aluminum:

58.0 psi

Storage temperature:

-20.0 °C

Volume resistivity:

0.01 Ohm cm

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