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Description for 3M 847
Rubber & gasket adhesive 847 is a medium viscosity grade adhesive for many brush or flow applications.Chemical Resistance Excellent resistance to many oils, Chemical Resistance: Aromatic solvents, Excellent resistance to many fuels, Chemical Resistance: Ketone Application Type Bond, Gasket adhesive 1 Part or 2 Part 1-Part Material Form Liquid Substrate Nylon, Plastic, Canvas Steel , Porous Surface, Non-Porous Surfaces, Nitrile Rubber, Most plastics Manufacturer 3M Chemistry Acetone, Base: Nitrile Rubber Cure Method Solvent, Heat Application Temperature (°F) >64 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 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
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Chemical Resistance
- Chemical Resistance - Excellent resistance to many fuels, Excellent resistance to many oils
- Chemical Resistance : Relative Solvent Resistance - Aromatic solvents, Ketone
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Application Type
- Gasketing - Gasket adhesive
- Adhesive - Bond
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1 Part or 2 Part
- 1-Part
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Material Form
- Liquid
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Chemistry
- Solvent-Based - Acetone
- Other - Base: Nitrile Rubber
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Application Method
- Brush
- Spray
- Flow
- Other - Pumping
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Cure Method
- Solvent
- Heat
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Color
- Brown - Dark Brown
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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
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 -
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Best Practices for 3M 847
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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.
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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.
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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.
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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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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 |
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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 |
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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 |
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<15 min | 10 mil wet film 2 surfaces |
Peel Strength Test Methods
Peel Strength | Type | Cure Time | Cure Temperature | Substrate | Test Temperature |
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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 |
Shear Strength Test Methods
Shear Strength | Type | Cure Time | Cure Temperature | Substrate | Test Temperature |
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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 |
Flash Point Test Methods
Flash Point | Test Method |
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-18.0°C | Closed up |
% Solids Test Methods
% Solids | Test Method |
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36 % | Solids Content (by weight) |
33 to 39 % | Solids Content (by weight) |