Applications

LOCTITE® 426 – Black Gel Cyanoacrylate Adhesive – Bonding metals, plastics, rubbers; impact, peel, shear strength; humidity-resistant applications

  • Item Name: LOCTITE® 426
  • Manufacturer: Henkel
  • Product Category: Instant adhesives
  • Technologies: Cyanoacrylate (ethyl cyanoacrylate)
  • Applications: Bonding metals, plastics, and rubbers
  • Color: Black (uncured)
  • Cure Type: Humidity cure
  • Package Size: Contact Techniq VN for details
  • Shelf Life: Contact Techniq VN for details

1. Product Overview

LOCTITE® 426 is a black, elastomer-toughened cyanoacrylate adhesive designed for strong impact and peel resistance. It offers enhanced durability against heat and humidity.

  • Technology: Cyanoacrylate
  • Chemical Type: Ethyl cyanoacrylate
  • Appearance: Black liquid
  • Curing Method: Humidity
  • Application: Bonding
  • Key Substrates: Metals, Plastics, and Rubbers

2. Applications

  • Used for bonding metals, plastics, and rubbers.
  • Ideal for applications requiring impact and peel strength.
  • Suitable for environments with heat and humidity exposure.

3. Typical Properties

Uncured Properties
Property Value
Viscosity (mPa·s) 7,000 – 14,000
Flash Point See SDS
Cured Performance
Test Condition Lap Shear Strength
Steel (grit blasted), 48h @ 22°C ≥16.5 N/mm² (≥2,395 psi)
24h @ 22°C + 24h @ 121°C, tested @ 121°C ≥4.8 N/mm² (≥695 psi)
24h @ 22°C + 24h @ 121°C, tested @ 22°C ≥20.7 N/mm² (≥3,000 psi)
Curing Performance
  • Cures via atmospheric moisture.
  • Full chemical/solvent resistance develops after 24 hours.
  • Cure speed depends on humidity, bond gap, and substrate.
  • Activators can be used for faster curing but may reduce strength.

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