LOCTITE E-40FL

Harmonization Code : 3506.91.90.99 | 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 ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

LOCTITE E-40FL

Main features

  • Toughened Epoxy Bonding
  • Medium Owrking Life
  • Shock and Vibration Resistance

Product Description

LOCTITE® EA E-40FL™ is a toughened, medium-viscosity, two-component epoxy adhesive designed for flexible bonding applications requiring excellent shock and impact resistance. After mixing, the adhesive cures at room temperature to form a flexible gray bond line with strong adhesion to plastics, metals, glass, wood, ceramics, rubber and masonry. The cured material provides good chemical and solvent resistance together with excellent electrical insulation characteristics, making it suitable for bonding dissimilar materials and low-stress, high-impact assemblies.

Key Features & Benefits

  • Toughened two-component epoxy adhesive.
  • Flexible cured bond line with excellent impact resistance.
  • Medium working life for convenient assembly operations.
  • Excellent resistance to shock and vibration.
  • Good chemical and solvent resistance after cure.
  • Excellent electrical insulation properties.
  • Suitable for bonding dissimilar materials.

Recommended Applications

  • Plastic, metal, glass and ceramic bonding.
  • Rubber-to-metal bonding applications.
  • Repair of strain gauges and printed circuit boards.
  • Sealing fiberglass component seams.
  • Bonding stainless steel inserts and hose assemblies.
Product Family

LOCTITE E-40FL

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Gray, opaque liquid
Mix Ratio
The amount of a constituent divided by the total amount of all other constituents in a mixture
1:1
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.
1.3/1.1
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
60,000 to 90,000/50,000 to 85,000 mPa.s

Additional Information

Technical Properties

As-Supplied / Before-Processing Properties

Property Value Unit Condition
Technology Epoxy — Two-component adhesive
Appearance (Resin) Off-white to Beige Liquid — Part A
Appearance (Hardener) Dark Gray Liquid — Part B
Appearance (Mixed) Gray Opaque Liquid — Mixed adhesive
Mix Ratio (Volume) 1 : 1 Resin : Hardener By volume
Mix Ratio (Weight) 100 : 85 Resin : Hardener By weight
Resin Viscosity 60,000 - 90,000 mPa·s (cP) Brookfield RVT, 25°C
Hardener Viscosity 50,000 - 85,000 mPa·s (cP) Brookfield RVT, 25°C
Specific Gravity (Mixed) 1.2 — 25°C
Working Life 40 minutes 25°C
Tack Free Time 130 minutes Typical
Technical Properties

After-Processing / Final-State Properties

Property Value Unit Condition / Method
Glass Transition Temperature (Tg) 30 °C Cured @ 25°C
Shore Hardness 75 Shore D ISO 868
Elongation 22 % ISO 527-2
Tensile Strength 16 N/mm² ISO 527-2
Dielectric Breakdown Strength 16 kV/mm IEC 60243-1
Lap Shear Strength (Aluminum) 25.9 N/mm² 3 days @ 22°C
Lap Shear Strength (Steel) 4.4 N/mm² Grit blasted steel
Block Shear Strength (Epoxy) 11 N/mm² ISO 13445
Block Shear Strength (Glass) 12.9 N/mm² ISO 13445
Accelerated Cure Strength ≥6.9 N/mm² 2 h @ 65°C, Aluminum

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