3M 847H

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Description for 3M 847H

• Nitrile High Performance Rubber & Gasket Adhesive • a high viscosity grade • Excellent resistance to many fuels and oils.

*See Terms of Use Below

Application Type	Bond
1 Part or 2 Part	1 Part
Material Form	Liquid
Substrate	Nylon, Most Plastics, Nitrile Rubber, Canvas Steel , Rubber
Manufacturer	3M
Chemistry	Acetone, 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)	High, 35,000 to 90,000
Color	Dark Brown
Chemical Resistance	Aromatic solvents, Fuel, ketone, Oil
High Temperature Resistance (°C)	>82
Low Temperature Resistance (°C)	-1, 24

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Best Practices for 3M 847H

*See Terms of Use Below

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.
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.
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.

See Vendor Technical Data Sheet for more info.
Clean-Up

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

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

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Technical Data

Overview

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Specifications

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Best Practices

*See Terms of Use Below
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Comparable Materials

*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.

Fixture or Handling Strength Time Test Methods

Fixture or Handling Strength Time	Fixture-Handling Strength Test Method
<10 min	10 mil wet film 2 surfaces

Viscosity Test Methods

Viscosity	Test Method	Temperature
High
35,000 to 90,000 cPs	Brookfield RVF @ 80°F 27°C #6 sp @ 4 rpm	27°C

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	24°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	14°C	Canvas-Steel	1°C
16 piw	180° Peel strength	30,240 min	14°C	Canvas-Steel	66°C
9 piw	180° Peel strength	30,240 min	14°C	Canvas-Steel	82°C

Flash Point Test Methods

Flash Point	Test Method
-0.4°F	Closed up

% Solids Test Methods

% Solids	Test Method
50 %	By weight
46 to 55 %	By weight

3M 847H

Description for 3M 847H

Best Practices for 3M 847H

Surface Preparation

Application

Curing