3M™ Scotch-Weld™ Epoxy Adhesive 420, Off-White, Part B, 50 Gallon, Drum

$1,227.98 / US gallon

SKU	7100425313
Legacy SKU	62328095310
UPC	00068060773500
Product Number	DP420

3M Scotch-Weld Epoxy Adhesive DP420 Off-White is a toughened epoxy adhesive designed to combine the proven bond performance of the DP420 base with a light color appearance, while meeting applicable UL 94 HB requirements. Its 2:1 mix ratio formula dispenses as a flowable, off-white adhesive that provides a 20-minute working time window supporting repositioning and realignment for accurate component placement during assembly.

BOND VERSATILITY: Bonds metals and composites, enabling multi-material bonding in demanding production environments
STRUCTURAL STRENGTH: Can replace screws, rivets, mechanical fasteners, and spot welds, supporting lighter assemblies and simplified fabrication
MEETS 94 HB: Meets UL 94 HB standards, helping manufacturers comply with applicable flammability requirements
LIGHT-COLORED EPOXY: Its 2:1 mix ratio formula dispenses as a flowable, off-white adhesive for for industrial applications requiring a light color appearance
WORKING TIME: Provides a 20-minute working time and handling strength in 2 hrs
TOUGHENED DURABILITY: Toughened formula resists impact for a durable bond

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Multiple Application Use

Versatile Across Industries

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Fantastic Price

Product Dimensions	Imperial	Metric
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Shipping Dimensions
Weight	532.92122 lb
Length	23.75 in
Width	23.75 in
Height	34.81181 in

PRODUCT FAQ

What is Part B, and do I need to mix it with something else?

Great question! Part B is one component of a two-part epoxy system. You'll need to mix it with 3M™ Scotch-Weld™ Epoxy Adhesive 420 Part A in the correct ratio to activate the adhesive and create a strong, durable bond. Always follow the technical data sheet for proper mixing instructions.
Why does this come in such a large 50-gallon drum?

The 50-gallon drum size is perfect for customers with high-volume production needs or ongoing manufacturing operations. It's more economical per unit volume and reduces the frequency of reordering, helping keep your production lines running smoothly without interruption.
Is the off-white color important for my application?

The off-white color is primarily a visual identifier and doesn't affect the adhesive's performance. However, if you need the bond line to be less visible in your final product, the off-white color blends better with many materials than a darker alternative would. If color is critical for your application, I'd recommend discussing your specific needs with our technical team.

For industrial/occupational use only. Not for consumer sale or use.

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.

```html 3M Scotch-Weld Epoxy Adhesive DP420 Off-White

3M Scotch-Weld Epoxy Adhesive DP420 Off-White represents a sophisticated two-part, flowable epoxy adhesive formulation engineered to provide exceptional resistance to impact forces. This specialized adhesive has been developed to meet the demanding requirements of structural bonding applications involving metals and composite materials, offering manufacturers a reliable solution for critical assembly operations.

Cure Time and Processing Flexibility

This adhesive system demonstrates impressive processing characteristics, achieving handling strength in approximately two hours at standard room conditions. For manufacturers seeking to optimize production schedules, the formulation supports thermal acceleration of the curing process, enabling faster cycle times when production demands require expedited assembly. Complete cure is achieved within 24 hours when maintained at room temperature of 73°F (23°C), providing a predictable timeline for manufacturing workflows.

Performance and Bond Durability

Once fully cured, 3M Scotch-Weld Epoxy Adhesive DP420 Off-White delivers structural bond performance characteristics that may enable the replacement of conventional fastening methods including screws, rivets, mechanical fasteners, and spot welds across most applications. This capability allows manufacturers to streamline assembly processes, achieve weight reduction in final products, and improve stress distribution characteristics across bonded joints. The toughened epoxy formulation maintains bond integrity when exposed to challenging environmental conditions including humidity fluctuations, elevated and reduced temperatures, diesel fuel, gasoline, salt water, and freshwater exposure.

Temperature Resistance and Compatibility

The adhesive has been engineered to withstand thermal exposure up to 392°F (200°C) for durations of up to 30 minutes, demonstrating compatibility with standard paint bake processes commonly utilized in manufacturing environments. This thermal tolerance expands the range of industries and applications where this adhesive can be effectively deployed.

Applications and Industries

Panel bonding operations
Composite material fabrication
Potting and encapsulation processes
Transportation industry assembly
Metalworking and metal fabrication
Sporting goods manufacturing
General industrial manufacturing

Product Availability and Delivery Systems

3M Scotch-Weld Epoxy Adhesive DP420 Off-White is available through multiple supply configurations to accommodate varying production volumes and application requirements. The product is offered in bulk quantities as well as convenient Duo-Pak cartridge formats, with volume options including 1.69 fl oz (50 ml), 6.76 fl oz (200 ml), and 14.07 fl oz (400 ml) sizes. The adhesive demonstrates compatibility with the 3M EPX Applicator System, which provides precision metering, thorough mixing, and controlled dispensing capabilities to ensure consistent application quality.

Specifications and Compliance

For manufacturers operating within strict color specification parameters or those requiring adherence to specific flammability standards, 3M Scotch-Weld Epoxy Adhesive DP420 Off-White provides an off-white coloration option alongside demonstrated structural bond durability. These characteristics make it particularly well-suited for demanding industrial assembly applications where both performance requirements and regulatory compliance considerations are essential factors in adhesive selection.

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