Henkel 661

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Description for Henkel 661

A two-part, rapid, room temperature cure, toughened acrylic adhesive that combines ease of use with a high level of performance. The cured adhesive provides a combination of high shear and impact strength with excellent durability.

*See Terms of Use Below

Brand	Bondmaster
Application Type	Bond
1 Part or 2 Part	2 Part
Material Form	Liquid
Substrate	Acrylic, Aluminum, Ferrite, Glass, Metals, ABS, Polycarbonate, PVC, Steel, Stainless Steel, Neodymium iron boron, Zinc Dichromate, Phenolic, Galvanized Steel, Galvanized Steel, Alnico, Rigid Plastics, Zinc plated Steel, Zinc Plated, Epoxy-Coated Metal, Zinc plated Steel, Painted Metal, Samarian cobalt
Industry	DC motors, Automotive, Marine, Electrical, Magnet, Speakers, Generators
Manufacturer	Henkel
Chemistry	Acrylic, Toughened
Cure Method	Part A/Part B
Cure Temperature (°C)	20 to 25, 20 to 25
Cure Time (min)	Rapid, 60
Viscosity (cPs)	8,500
Color	Dark Green
Chemical Resistance	Acetone, Diesel Fuel, Gasoline, Isopropyl Alcohol, Salt Spray
High Temperature Resistance (°C)	155
Low Temperature Resistance (°C)	-65
Durability	Excellent Durability

Best Practices for Henkel 661

*See Terms of Use Below

Surface Preparation

Minimal Surface Preparation Required.

The 661 adhesive requires no surface preparation on most metal, ferrite, and glass surfaces. For optimum bond strength on metal parts the surface should be washed with a solvent or cleansing solution, abraded with an abrasive pad, and then rinsed with a solvent or cleansing solution. Glass surfaces should be cleaned with a commercial glass cleaner before bonding. Painted surfaces should be abraded lightly and then wiped clean.
Application

BONDMASTER's Equipment Group has a complete line of industrial dispensing equipment to dispense the 661 in magnet bonding applications. Equipment is available to dispense the adhesive through BONDMASTER's unique External Mix dispensing process. The External Mix Dispensing System is a technology that results in high performance without the use of a static mixer. This allows the use of the adhesive in high-speed production without having to change static mixers frequently. The External Mix technology also provides the user with a higher performance than conventional bead on bead systems.
Mixing

For optimum performance, 661 should be mixed in a 1:1 (A:B) ratio. However, the adhesive has a very forgiving mix ratio, and complete cure can be achieved even when the adhesive is not mixed exactly in a one to one ratio.

BONDMASTER 661 Part A & Part B should not be mixed in large quantities, as a vigorous chemical reaction will occur generating a significant amount of heat and vapors.
Curing

Exposure to air will inhibit the cure of all acrylic adhesives. Because of this inhibition, the exposed surface of any mixed adhesive squeezed outside the bondline will remain tacky for a few hours. Only the cure of the exposed surface is inhibited, not the adhesive in the bondline.
Clean-Up

Unreacted Part A & Part B can be cleaned up using acetone, isopropanol, or MEK.

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Technical Data

Overview

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Specifications

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elit amet ipsum erat.	sit consectetuer laoreet.	dolore dolore.
dolore dolore.	aliquam nibh magna.	sed tincidunt.
erat.	ipsum amet nonummy.	diam.
elit.	tincidunt magna sed.	sed.
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diam diam nibh.	laoreet adipiscing.	dolore lorem.
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elit amet magna.	consectetuer.	aliquam lorem.

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erat sed magna.	sit.	tincidunt.
laoreet sit diam ipsum.	erat ipsum ipsum.	ipsum lorem.
laoreet consectetuer erat.	lorem diam.	adipiscing nibh.
nibh nibh lorem erat.	erat adipiscing laoreet.	dolor adipiscing.
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magna diam.	amet aliquam sit.	dolor.
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aliquam euismod ut.	ut elit.	amet.
dolor amet elit.	erat erat.	nibh ut.

Best Practices

*See Terms of Use Below
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Comparable Materials

*See Terms of Use Below
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Download Technical Data Sheet Save This Material

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Fixture or Handling Strength Time Test Methods

Fixture or Handling Strength Time	Fixture-Handling Strength Time Temperature
0.75 to 1.50 min	25°C

Viscosity Test Methods

Viscosity	Test Method	Temperature
8,500 cPs	Viscosity, Brookfield, 25oC 77°F @ 20 rpm	25°C

Work / Pot Time Test Methods

Work / Pot Time	Temperature
0.50 min	25°C

Impact Strength Test Methods

Impact Strength	Substrate	Test Method
High
8 to 10 (ft-lb / in2)	Steel/Steel	ASTM 950

Peel Strength Test Methods

Peel Strength	Type	Substrate	Test Method
High
10 to 20 (pli)	T-Peel strength	Steel/Steel	ASTM 1876

Shear Strength Test Methods

Shear Strength	Type	Substrate	Test Temperature	Test Method
High
2,500 to 3,000 psi	Lap shear strength	Steel/Steel	25°C	ASTM D-1002
2,000 to 2,800 psi	Lap shear strength	Aluminum/Aluminum	25°C	ASTM D-1002
1,500 to 2,500 psi	Lap shear strength	Galvanized steel/Galvanized steel	25°C	ASTM D-1002
2,500 to 3,000 psi	Lap shear strength	Stainless Steel/Stainless Steel	25°C	ASTM D-1002
2,000 to 2,800 psi	Lap shear strength	Zinc plated steel/Zinc plated steel	25°C	ASTM D1002
2,000 psi	Lap shear strength	Ferrite/Steel	25°C	ASTM D-1002, Substrate Failure
2,000 psi	Lap shear strength	Ferrite/Zinc Dichromate	25°C	ASTM D-1002, Substrate Failure
2,000 psi	Lap shear strength	Ferrite/Galvanized Steel	25°C	ASTM D-1002, Substrate Failure
2,000 psi	Lap shear strength	Ferrite/Zinc plated	25°C	ASTM D-1002, Substrate Failure
250 psi	Lap shear strength	Glass/Glass	25°C	ASTM D1002, Substrate Failure
300 to 400 psi	Lap shear strength	Phenolic/Phenolic	25°C	ASTM D1002
300 to 400 psi	Lap shear strength	PVC/PVC	25°C	ASTM D1002
50 to 100 psi	Lap shear strength	Polycarbonate/Polycarbonate	25°C	ASTM D1002
80 to 120 psi	Lap shear strength	ABS/ABS	25°C	ASTM D1002
200 to 300 psi	Lap shear strength	Acrylic/Acrylic	25°C	ASTM D1002

Shore D Hardness Test Methods

Shore D Hardness	Hardness Temperature
60 to 65	25°C
55 to 60	50°C
40 to 45	100°C

Henkel 661

Description for Henkel 661

Best Practices for Henkel 661

Surface Preparation

Application

Mixing

Curing

Clean-Up

Register for FREE to view more details

Why register?

Sign up now Already registered? Sign in!

Technical Data

Overview

elit nibh diam lorem.

magna.

nibh.

sit sit consectetuer tincidunt.

ut erat elit.

dolor nibh elit ut.

Specifications

nibh dolor tincidunt nibh.

sit elit.

ipsum nibh nibh.

consectetuer amet laoreet euismod.

ut nibh dolor.

laoreet.

Best Practices

consectetuer dolore erat elit diam.

magna adipiscing dolor.

lorem adipiscing adipiscing lorem ipsum laoreet.

amet adipiscing euismod.

euismod consectetuer dolore elit euismod.

Comparable Materials

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Gluespec Poll

What level of expertise do you have in specialty chemicals like adhesives, sealants, conformal coatings, etc.?

Fixture or Handling Strength Time Test Methods

Viscosity Test Methods

Work / Pot Time Test Methods

Impact Strength Test Methods

Peel Strength Test Methods

Shear Strength Test Methods

Shore D Hardness Test Methods

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