Applications

LOCTITE® UK 3364 – Urethane Adhesive – Rigid flame-resistant potting and bonding for electrical, structural, and plastic components

  • Item Name: LOCTITE® UK 3364™

  • Manufacturer: Henkel

  • Technologies: Two-component urethane (polyisocyanate-based)

  • Color: Resin – Dark brown liquid; Hardener – Black liquid; Cured – Black solid

  • Cure Type: Room temperature cure (heat accelerates)

  • Package Size: Contact to Techniq VN for details.

  • Shelf Life: Contact to Techniq VN for details.

1. Product overview

LOCTITE® UK 3364™ is a rigid two-component urethane adhesive composed of polyisocyanate resin and hardener. It features low viscosity, rapid room-temperature curing, and high flame resistance. Supplied in a convenient two-part system, it is classified by UL and ULC for plastics and components, ensuring reliability in demanding environments.


2. Applications

Designed for potting and bonding applications, LOCTITE® UK 3364™ provides structural integrity for electrical, mechanical, and composite assemblies. It is particularly suitable for use where flame resistance, fast curing, and high mechanical strength are required.

3. Typical Properties

Condition Property Value
Uncured – Resin Specific Gravity (25 °C) 1.49
Viscosity (25 °C, shear rate 100 s⁻¹) 13,365 mPa·s
Uncured – Hardener Specific Gravity (25 °C) 1.25
Viscosity (25 °C, shear rate 100 s⁻¹) 850 mPa·s
Mixed Specific Gravity (25 °C) 1.31
Gel Time (25 °C) 60–120 s
Tack Free Time (25 °C) 330–360 s
Cured (7 days @ 22 °C) Shore Hardness (D) ≥80
Glass Transition Temperature (Tg) 50 °C
Tensile Strength 26.7 N/mm² (3,870 psi)
Young’s Modulus 2,320 N/mm² (336,400 psi)
Elongation at Break 1.7 %
Dielectric Breakdown Strength 32 kV/mm
Volume Resistivity 2.3 × 10¹⁵ Ω·cm

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