• Description for Henkel 681

    • Non-Corrosive - High Performance Magnet Bonding Adhesive • Vapors are Non-Corrosive to Copper Surfaces • Nonflammable • No Activator Required • Excellent Gap Filling Ability • High Shear, Peel, & Impact Strength • Rapid Room Temperature Cure • Fixtures Parts in 30 to 60 seconds • Environmentally Friendly – 100% Solids • 100% Cure Outside of Bondline •<br/>

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    Brand Bondmaster
    Application Type Bond
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Substrate Copper, Glass, Alnico, Ferrite, Metal: Neodymium iron boron, Steel, Epoxy-Coated Metal, Metals, Painted Metal, Samarian cobalt
    Industry DC motors, Electric motors, Magnets, Speakers, Generators
    Manufacturer Henkel
    Chemistry Acrylic, Toughened
    Cure Method Part A/Part B
    Cure Temperature (°C) 20 to 25 Room Temperature, 20 to 25
    Cure Time (min) Rapid, 480
    Viscosity (cPs) 90,000, 13,500
    Color Dark Green
    Chemical Resistance Salt Spray
    High Temperature Resistance (°C) 155
    Low Temperature Resistance (°C) -65
  • Technical Data

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  • Best Practices

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Fixture or Handling Strength Time Test Methods
Fixture or Handling Strength Time Fixture-Handling Strength Time Temperature
0.50 to 1.00 min 25°C
Viscosity Test Methods
Viscosity Temperature
90,000 cPs 25°C
13,500 cPs 25°C
Work / Pot Time Test Methods
Work / Pot Time Temperature
0.50 min 25°C
Shear Strength Test Methods
Shear Strength Substrate Test Method
High ASTM D1002
3,000 to 3,500 psi Steel/Steel ASTM D1002, Substrate failure
2,000 psi Ferrite/Steel ASTM D1002, Substrate failure
250 psi Glass/Glass
Peel Strength Test Methods
Peel Strength Substrate Test Method
20 to 25 piw Steel/Steel ASTM 1876
Impact Strength Test Methods
Impact Strength Substrate Test Method
14 psi Steel/Steel ASTM 950
Shore D Hardness Test Methods
Shore D Hardness Hardness Temperature
70 to 75 25°C