• Description for 3M 776

    General purpose, solvent based adhesive/Coatings with good adhesion to synthetic rubber, metal, glass, and many plastics.

    *See Terms of Use Below

    Application Type Bond, Coat
    1 Part or 2 Part 1 Part
    Material Form Liquid
    Substrate Aluminum, Glass, metal, Many plastics, synthetic rubber, Steel
    Manufacturer 3M
    Chemistry Solvent-Based, MIBK, Ethanol
    Cure Method Solvent
    Cure Time (min) 1,440
    Viscosity (cPs) 1,000 to 2,000
    Color Transparent Amber
    Chemical Resistance oil, gasoline, aromatic fuels, Salt, Water, Hydrocarbons, Hot Oil
    High Temperature Resistance (°C) Heat resistance
    Low Temperature Resistance (°C) -54
    Other Resistance Fuel Resistant
    Key Specifications Mil-Spec (United States Military Standard): MIL-D-17951E
  • Technical Data for 3M 776

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Liquid
    • Substrate
    • Industry
      • Other - tanks (aluminum or steel)
    • Chemistry
    • Application Method
      • Dispenser - flow applicator
      • Brush
    • Cure Method
      • Solvent
    • Color
      • Clear / Transparent - Transparent Amber
    • Key Specifications
      • Mil-Spec (United States Military Standard): D-17951E - MIL-D-17951E
    Specifications
    Cure Specs
    Cure Time (min) 1,440
    Viscosity (cPs) 1,000 to 2,000
    Tack Free Time (min) 20
    Bond Strength
    Peel Strength (piw) 3, 5, 8, 10, 10, 13 Test Method
    Material Resistance
    Chemical Resistance oil, gasoline, aromatic fuels, Salt, Water, Hydrocarbons, Hot Oil
    High Temperature Resistance (°C) Heat resistance
    Low Temperature Resistance (°C) -54
    Moisture/Humidity Resistance Moisture resistance
    Other Resistance Fuel Resistant
    Other Properties
    Flash Point (°F) 55.4 Test Method
    % Solids (%) 24 Test Method
    Business Information
    Shelf Life Details Store 3M™ Fuel Resistant Coatings EC-776 or EC-776SR at 60-80°F (15-27°C) for maximum storage life. Higher temperatures reduce normal storage life. Lower temperatures can increase viscosity temporarily. Rotate stock on a “first in-first out” basis.;Standard shelf life for 3M EC-776 Coating is 12 months from date of shipment when stored at 60-80°F (15-27°C).
    Shelf Life Temperature (°F) 59 to 81
    Shelf Life Type From date of shipment.
    Shelf Life (mon) 12
  • Best Practices for 3M 776

    *See Terms of Use Below

    1. Surface Preparation

      Surfaces to be coated should be clean, dry and free from oil or grease.

      Note: When using solvents, be sure to follow the manufacturer’s precautions and directions for use for handling such materials

    2. Application

      3M™Fuel Resistant Coatings EC-776 and EC-776SR may be applied by brush or flow applicator. When applying in multiple coats allow a minimum of 10 minutes between coats. Under normal atmospheric conditions this coating becomes tack free in about 20 minutes and should thoroughly dry in approximately 24 hours. Fuel Resistant Coatings EC-776 and EC-776SR are commonly used without heat cure. Heat curing Fuel Resistant Coatings EC-776 and EC-776SR for 1 hour at 250°F will increase moisture resistance of the coatings.

      Coverage is approximately 320 square feet per gallon for a 1 mil dry film.

      Surfaces to be coated should be clean, dry and free from oil or grease.

      Fuel Resistant Coatings EC-776 and EC-776SR may also be used to coat tanks (aluminum or steel) by the fill and drain method. It is sometimes desirable to dilute Fuel Resistant Coatings EC-776 and EC-776SR with methyl ethyl ketone or solvent such as 3M™ Scotch-Grip™ Solvent No. 3 to assure proper run out or flow properties when using the fill and drain method. An air hose inserted into the fuel tank can be used to help provide air circulation for proper drying.

    3. Clean-Up

      Clean up can be accomplished with 3M™ Scotch-Grip™ Solvent No. 3. See 3M™ Scotch-Grip™ Solvent No. 3 Technical Data Sheet for additional technical information.

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Peel Strength Test Methods
Peel Strength Type Substrate Test Time Test Temperature Test Method
3 piw 180° Peel Strength Canvas/steel 1,440 min 24°C C-5H
5 piw 180° Peel Strength Canvas/steel 4,320 min 24°C C-5H
8 piw 180° Peel Strength Canvas/steel 7,200 min 24°C C-5H
10 piw 180° Peel Strength Canvas/steel 10,080 min 24°C C-5H
10 piw 180° Peel Strength Canvas/steel 20,160 min 25°C C-5H
13 piw 180° Peel Strength Canvas/steel 30,240 min 25°C C-5H
Flash Point Test Methods
Flash Point Test Method
13.0°C closed cup
% Solids Test Methods
% Solids Test Method
24 % By weight, Approx.