3M 7100084536 Scotch-weld Epoxy Adhesive 420NS Black Part a

Product Description

The 3M 7100084536 is the Part A accelerator component of the Scotch-Weld Epoxy Adhesive 420NS two-part toughened epoxy system. Formulated as a non-sag adhesive, it is designed for use with the corresponding Part B component in a 2:1 mix ratio. Work life is approximately 20 minutes, with handling strength achieved in roughly 2 hours. The cured bond delivers good shear and peel strength along with solid impact resistance and durability. This product is typically applied by industrial maintenance technicians, assembly professionals, and skilled tradespeople working with demanding bonding applications across metals, ceramics, wood, and select plastics.

The 420NS system is suited for structural and semi-structural bonding in environments where non-sag performance is required on vertical or overhead surfaces. Its toughened formulation handles dynamic loads and vibration better than standard rigid epoxies. Typical applications include metal-to-metal bonding, ceramic repair, wood assembly, and plastic substrate bonding in industrial, commercial, and maintenance-of-equipment contexts. This listing covers Part A only and must be paired with the corresponding Part B component to complete the two-part system.

Key Features

• Toughened, non-sag two-part epoxy formulation resists slumping on vertical surfaces
• 2:1 mix ratio for use with the designated Part B component
• Approximately 20-minute work life allows positioning and adjustment before cure begins
• Handling strength reached in approximately 2 hours after mixing
• Bonds to metals, ceramics, wood, and select plastics
• Good shear strength, peel strength, and impact resistance after cure

Compatibility

Designed as Part A of the Scotch-Weld Epoxy Adhesive 420NS two-part system. Must be used with the corresponding Part B component at the specified 2:1 mix ratio. Bonds effectively to metals, ceramics, wood, and some plastics.

Installation Notes

This adhesive is applied by maintenance technicians, assembly professionals, or tradespeople familiar with two-part epoxy systems. Before dispensing, ensure both Part A and Part B are at the recommended application temperature and that all surfaces are clean, dry, and free of oils or contaminants. Follow the manufacturer safety data sheet for ventilation requirements and personal protective equipment. Do not substitute Part B components from other product lines, as mix ratios and cure chemistry are system-specific.

Technical Specifications

• Mix Ratio (B:A): 2:1
• Work Life: approximately 20 minutes
• Handling Strength: approximately 2 hours
• Color: Black
• Component: Part A (Accelerator)
• Minimum Order Quantity: 43
• Weight: 10.66 pounds
• UPC: 00048011581330

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100084536