LOCTITE 409

Harmonization Code : 3506.10.00.00 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg

LOCTITE 409

Main features

  • High-Viscosity Placement Control
  • to Plastics Bonding
  • Reduced Dripping and Migration

Product Description

LOCTITE® 409 is a one-component, high-viscosity ethyl cyanoacrylate adhesive gel designed for general-purpose bonding of plastics, rubbers and metals. Its gel consistency prevents running and dripping, making it particularly effective for use on vertical and overhead surfaces. The adhesive cures rapidly when exposed to ambient humidity, delivering strong bonds and fast handling strength while maintaining excellent gap-filling capability compared to low-viscosity instant adhesives. LOCTITE 409 is commonly used for industrial assembly, repair applications and component bonding where controlled adhesive placement and non-sag performance are required.

  • High-viscosity gel formulation prevents adhesive flow.
  • Suitable for use on vertical and overhead surfaces.
  • One-component adhesive requiring no mixing.
  • Fast humidity-activated cure at room temperature.
  • Bonds plastics, rubbers and metals.
  • Controlled application with reduced dripping and migration.
  • Provides strong, durable bonds with good gap-filling capability.

Recommended Applications

  • General-purpose industrial assembly.
  • Plastic, rubber and metal component bonding.
  • Vertical and overhead bonding applications.
  • Maintenance and repair operations.
  • Applications requiring controlled adhesive placement.
Product Family

LOCTITE 409

Loading pricing…
TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Clear to slightly cloudy gel
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.05
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
15,000 - 40,000 mPa.s

Additional Information

Technical Properties

As-Supplied / Before-Processing Properties

Property Value Unit Condition
Technology Cyanoacrylate — Ethyl cyanoacrylate adhesive gel
Chemical Type Ethyl Cyanoacrylate — General-purpose instant adhesive
Appearance Clear to Slightly Cloudy Gel — Uncured
Components One Part — No mixing required
Specific Gravity 1.05 — 25°C
Casson Viscosity ≥4,000 mPa·s Cone & Plate Rheometer, 25°C
Brookfield Viscosity 15,000 - 40,000 mPa·s (cP) RVF, Spindle TC, 20 rpm, 25°C
Key Substrates Plastics, Rubbers and Metals — Typical bonding applications
Technical Properties

After-Processing / Final-State Properties

Property Value Unit Condition / Method
Glass Transition Temperature (Tg) 120 °C ASTM E228
Coefficient of Thermal Expansion 80 × 10⁻⁶ K⁻¹ ISO 11359-2
Thermal Conductivity 0.1 W/m·K ISO 8302
Volume Resistivity 10 × 10¹⁵ Ω·cm IEC 60093
Dielectric Breakdown Strength 25 kV/mm IEC 60243-1
Lap Shear Strength (Steel, Grit Blasted) 18 - 26 N/mm² 24 h @ 22°C
Lap Shear Strength (Aluminum, Etched) 11 - 19 N/mm² 24 h @ 22°C
Lap Shear Strength (ABS) >6 N/mm² 24 h @ 22°C
Tensile Strength (Steel) 12 - 25 N/mm² ISO 6922, 24 h @ 22°C
Tensile Strength (Buna‑N) ≥7.0 N/mm² ISO 6922, 30 s @ 22°C

Leading Brands Trust in Our Products and Services

Products that Perform| Knowledge that Serves| Service that Delivers