• Description for 3M 78ET

    Industrial grade, versatile bulk spray adhesive formulated for specific substrates and market needs (soft foams - polystyrene foams). The adhesive is packaged in convenient, portable, no maintenance aerosol cylinders.

    *See Terms of Use Below

    Application Type Bond
    1 Part or 2 Part 1 Part
    Material Form Liquid, Synthetic elastomer
    Substrate Acrylic, Aluminum, Fabrics, Soft foams, Polystyrene foams, Wood, Galvanized, Polyethylene, Glass, Metal, Heavy papers, Most plastics, Polypropylene, Concrete, FRP (Fiber Reinforced Plastic), Polystyrene foams, Birch, ABS
    Industry Refrigerators, Store displays, Motor homes, HVAC
    Manufacturer 3M
    Chemistry Synthetic elastomer, Non Flammable Solvent
    Cure Method Solvent
    Cure Time (min) Fast, 1.00 to 2.00
    Color Green, Clear, Translucent
    High Temperature Resistance (°C) High temperature resistance
    Density (g/cm³) 6.12 (lbs/gal)

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Shear Strength Test Methods
Shear Strength Type Substrate Test Temperature Test Method
134 psi Overlap shear strength ABS to ABS (2 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
97 psi Overlap shear strength ABS to ABS (1 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
167 psi Overlap shear strength Acrylic to Acrylic (2 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
190 psi Overlap shear strength Aluminum to Aluminum (2 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
184 psi Overlap shear strength Birch to Birch (2 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
70 psi Overlap shear strength Birch to Birch (1 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
148 psi Overlap shear strength Galvanized to Galvanized (2 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
89 psi Overlap shear strength Galvanized to Galvanized (1 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
63 psi Overlap shear strength Polyethylene to Polyethylene (2 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
98 psi Overlap shear strength Polypropylene to Polypropylene (2 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
158 psi Overlap shear strength FRP (Fiber Reinforced Plastic) to FRP (2 surface adhesive bond) 24°C 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°)
Tensile Strength Test Methods
Tensile Strength Cure Time Test Temperature Test Method
30 (grams) 10 min 93°C 4 square inch bonds tested with 30 grams hanging in tensile. Temperature is held for 10 minutes and ramped at 10°F increments, until complete failure.