Applications

LOCTITE® 409

  • Item Name: LOCTITE® 409
  • Manufacturer: Henkel
  • Product Category: Instant adhesives
  • Technologies: Cyanoacrylate (Ethyl cyanoacrylate)
  • Applications: Bonding plastics, rubbers, and metals; formulated as a gel to prevent adhesive flow on vertical surfaces
  • Color: Clear to slightly cloudy gel
  • Cure Type: Humidity cure
  • Package Size: Contact Avantek for details
  • Shelf Life: Contact Avantek for details

1. Product Overview

LOCTITE® 409 is a high-viscosity, ethyl cyanoacrylate adhesive gel designed for bonding plastics, rubbers, and metals. It provides strong adhesion and prevents adhesive flow on vertical surfaces due to its gel consistency. The adhesive cures with humidity and does not require mixing.

2. Applications

  • General-purpose bonding
  • Suitable for plastics, rubbers, and metals
  • Works well on vertical surfaces due to its gel-like consistency

3. Typical Properties

Property Value
Appearance (Uncured) Clear to slightly cloudy gel
Specific Gravity @ 25°C 1.05
Flash Point Refer to SDS
Viscosity (Brookfield RVF, 25°C, Spindle TC, 20 rpm) 15,000 to 40,000 mPa·s
Cure Mechanism Humidity
Curing Performance
Substrate Fixture Time (seconds)
Steel (degreased) 50 – 100
Aluminum 5 – 30
Neoprene, Nitrile Rubber 15 – 25
ABS 20 – 60
PVC 50 – 100
Polycarbonate 40 – 80
Phenolic 20 – 50
Cured Properties (After 24 Hours @ 22°C)
Property Value
Coefficient of Thermal Expansion 80 × 10⁻⁶ K⁻¹
Thermal Conductivity 0.1 W/(m·K)
Glass Transition Temperature 120°C
Volume Resistivity 10¹⁵ Ω·cm
Dielectric Breakdown Strength 25 kV/mm
Adhesive Strength (Lap Shear @ 22°C)
Substrate Strength (N/mm²) Strength (psi)
Steel (grit blasted) 18 – 26 2,610 – 3,770
Aluminum (etched) 11 – 19 1,595 – 2,755
ABS >6 >870
PVC >6 >870
Polycarbonate >5 >725
Phenolic 5 – 15 725 – 2,175
Neoprene, Nitrile >10 >1,450

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