• Description for 3M 847

    Rubber & gasket adhesive 847 is a medium viscosity grade adhesive for many brush or flow applications.

    *See Terms of Use Below

    Application Type Bond, Gasket adhesive
    1 Part or 2 Part 1 Part
    Material Form Liquid
    Substrate Nylon, Plastic, Nitrile Rubber, Canvas Steel , Non-Porous Surfaces, Porous Surface, Most plastics
    Manufacturer 3M
    Chemistry Acetone, Base: Nitrile Rubber
    Cure Method Heat, Solvent
    Cure Temperature (°C) 93, 115, 138, 160, 182, 204
    Cure Time (min) Quick, >120, >40, >12, >8, >5.00, >2.00
    Viscosity (cPs) Medium, 1,500 to 3,200
    Color Dark Brown
    Chemical Resistance Excellent resistance to many oils, Excellent resistance to many fuels, Ketone
    Relative Solvent Resistance Chemical Resistance: Aromatic solvents
    High Temperature Resistance (°C) 82
    Key Specifications Mil-Spec (United States Military Standard): Meets the requirements of Mil-C-4003
  • Technical Data for 3M 847

    Overview
    • Application Type
      • Gasketing - Gasket adhesive
      • Adhesive - Bond
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Liquid
    • Substrate
      • Non-Porous Substrates - Non-Porous Surfaces
      • Porous Substrates - Porous Surface
      • Steel - Canvas Steel
      • Plastic - Most plastics
      • Nylon
      • Nitrile Rubber
      • Other - Gasket, Leather, Gasketing material, A variety of substrates
    • Chemistry
    • Application Method
      • Brush
      • Spray
      • Flow
      • Other - Pumping
    • Cure Method
      • Solvent
      • Heat
    • Color
      • Brown - Dark Brown
    • Key Specifications
      • Mil-Spec (United States Military Standard): C-4003 - Meets the requirements of Mil-C-4003
    Specifications
    Cure Specs
    Application Temperature (°F) >64
    Cure Temperature (°C) 93, 115, 138, 160, 182, 204 Test Method
    Cure Time (min) Quick, >120, >40, >12, >8, >5.00, >2.00 Test Method
    Viscosity (cPs) Medium, 1,500 to 3,200 Test Method
    Dry Time (min) Quick
    Work / Pot Time (min) <15 Test Method
    Bond Strength
    General Bond Strength (psi) Strong
    Peel Strength (piw) 13, 24, 28, 31, 35, 40, 20, 16, 9 Test Method
    Shear Strength (psi) 152, 200, 20, 9 Test Method
    Material Resistance
    Chemical Resistance Excellent resistance to many oils, Excellent resistance to many fuels, Ketone
    Relative Solvent Resistance Chemical Resistance: Aromatic solvents
    High Temperature Resistance (°C) 82
    Hardness
    Flexibility Flexible
    Other Properties
    Flash Point (°F) -0.4 Test Method
    % Solids (%) 36, 33 to 39 Test Method
    Business Information
    Shelf Life Details Storage: Store product at 60-80°F (15-27°C) for maximum storage life. Higher temperatures reduce normal storage life. Lower temperatures cause increased viscosity of a temporary nature. Rotate stock on a “first in-first out” basis., Shelf Life: When stored in the original unopened container, under the conditions recommended, these products have a shelf life from date of shipment as follows:3M™ Scotch-Grip™ Rubber & Gasket Adhesive 847 15 months., Store product at 60-80°F (15-27°C) for maximum storage life. Higher temperatures reduce normal storage life. Lower temperatures cause increased viscosity of a temporary nature. Rotate stock on a “first in-first out” basis.; When stored in the original unopened container, under the conditions recommended, these products have a shelf life from date of manufacture
    Shelf Life Temperature (°F) 59 to 81, 60 to 80
    Shelf Life Type from date of shipment, From date of manufacture
    Shelf Life (mon) 15, 24
  • Best Practices for 3M 847

    *See Terms of Use Below

    1. Surface Preparation

      Remove all dust, dirt, oil, grease, wax, loose paint, etc. Wiping with a solvent such as methyl ethyl ketone (MEK) or 3M™ Citrus Base Cleaner will aid in preparing the surface for bonding.

      When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use.

    2. Application

      For best results the temperature of the adhesive and surfaces to be bonded should be at least 65°F (18°C).

      Stir well before using

      Porous Surface(s): Brush, flow or spray a thin, even coat of adhesive to one or both surfaces. Coating both surfaces is preferred since it gives greater strength and permits longer open time before bonding. Very absorbent materials may require more than one coat. Bond while adhesive is still wet or aggressively tacky. Join surfaces with firm pressure.

      Non-Porous Surfaces: Brush, flow or spray a thin, even coat of adhesive to both surfaces. Allow adhesive to dry until tacky. Join surfaces with firm pressure.

    3. Curing

      Drying time depends on temperature, humidity, air movement, and porosity of the materials bonded. Greater immediate strength may be obtained by heat or solvent reactivation.

      Reactivation: To solvent reactivate, coat both surfaces with adhesive. Allow to dry tack-free. Lightly wipe one surface with a solvent such as Methyl Ethyl Ketone (MEK).* Complete bond within 30 seconds. To heat activate, coat both surfaces with adhesive. Allow adhesive to dry completely. Reactivate by heating one or both surfaces to a minimum of 180°F (82°C). Assemble immediately (while hot), using firm pressure to ensure contact.

      . Curing: 3M™ Nitrile High Performance Rubber & Gasket Adhesives 847 and 847H may be heat cured to obtain improved physical properties. Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.

    4. Clean-Up

      Excess adhesive may be removed with a solvent such as methyl ethyl ketone (MEK) or acetone, preferably while adhesive is still wet.

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    *See Terms of Use Below

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
93°C Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
115°C Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
138°C Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
160°C Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
182°C Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
204°C Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
Cure Time Test Methods
Cure Time Test Method
Quick
>120 min Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
>40 min Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
>12 min Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
>8 min Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
>5.00 min Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
>2.00 min Cure assembled parts at time and temperature listed using 100 psi pressure on the bond line.
Viscosity Test Methods
Viscosity Test Method Temperature
Medium
1,500 to 3,200 cPs Brookfield RVF @ 80°F 27°C #3 sp @ 20 rpm, approx. 27°C
Work / Pot Time Test Methods
Work / Pot Time Test Method
<15 min 10 mil wet film 2 surfaces
Shear Strength Test Methods
Shear Strength Type Cure Time Cure Temperature Substrate Test Temperature
152 psi Overlap shear strength 30,240 min 25°C Room Temperature 1/8 in. / 1/8 in. Birch 1°C
200 psi Overlap shear strength 30,240 min 25°C Room Temperature 1/8 in. / 1/8 in. Birch 14°C
20 psi Overlap shear strength 30,240 min 25°C Room Temperature 1/8 in. / 1/8 in. Birch 66°C
9 psi Overlap shear strength 30,240 min 25°C Room Temperature 1/8 in. / 1/8 in. Birch 82°C
Peel Strength Test Methods
Peel Strength Type Cure Time Cure Temperature Substrate Test Temperature
13 piw 180° Peel strength 1,440 min 14°C Canvas-Steel 14°C
24 piw 180° Peel strength 4,320 min 14°C Canvas-Steel 14°C
28 piw 180° Peel strength 7,200 min 14°C Canvas-Steel 14°C
31 piw 180° Peel strength 10,080 min 14°C Canvas-Steel 14°C
35 piw 180° Peel strength 20,160 min 14°C Canvas-Steel 14°C
40 piw 180° Peel strength 30,240 min 14°C Canvas-Steel 14°C
20 piw 180° Peel strength 30,240 min 1°C Canvas-Steel 1°C
16 piw 180° Peel strength 30,240 min 66°C Canvas-Steel 66°C
9 piw 180° Peel strength 30,240 min 9°C Canvas-Steel 82°C
Flash Point Test Methods
Flash Point Test Method
-18.0°C Closed up
% Solids Test Methods
% Solids Test Method
36 % Solids Content (by weight)
33 to 39 % Solids Content (by weight)