3M 7010365971 Scotch-weld Epoxy Adhesive 420LH Part a

Product Description

The 3M 7010365971 is the Part A (Accelerator) component of the Scotch-Weld Epoxy Adhesive 420LH system, a toughened, low-halogen two-part structural epoxy. It mixes at a 2:1 ratio with its corresponding Part B and delivers a 20-minute work life with handling strength achieved in approximately 2 hours. The 420LH formulation is engineered for good shear and peel strength alongside solid impact resistance and long-term durability. Licensed adhesive applicators and industrial maintenance technicians are the primary installers. This listing covers the 5-gallon Part A container only; Part B must be sourced separately.

The 420LH system is suited for structural bonding applications in environments where halogen content must be kept low, such as certain electronics, aerospace, and fire-safety-sensitive assemblies. The adhesive bonds effectively to a broad range of substrates including metals, composites, and many rigid plastics. Its extended work life makes it practical for larger bond areas or assemblies that require positioning time before cure begins.

Key Features

• Low-halogen formulation suitable for applications with restricted halogen content requirements
• 2:1 mix ratio (Part A to Part B) for straightforward metering and dispensing
• 20-minute work life allows time for positioning and assembly adjustments
• Handling strength reached in approximately 2 hours after mixing
• Good shear, peel, and impact strength for structural bonding demands
• Bonds to a wide range of surfaces including metals, composites, and rigid plastics

Compatibility

Designed for use as the Part A (Accelerator) component in the 3M Scotch-Weld Epoxy Adhesive 420LH two-part B/A system. Part B must be used in conjunction at the specified 2:1 mix ratio to achieve rated performance.

Installation Notes

This product should be dispensed and applied by personnel trained in two-part epoxy handling and metering equipment. Ensure both components are at the recommended application temperature before mixing and verify the correct 2:1 mix ratio is maintained throughout the job. Work in a well-ventilated area and follow applicable safety data sheet guidance for personal protective equipment. Do not mix partial quantities that cannot be confirmed at the correct ratio, as off-ratio batches will not cure to rated strength.

Technical Specifications

• Mix Ratio: 2:1 (Part A to Part B)
• Work Life: 20 minutes
• Handling Strength Time: 2 hours
• Color: Off-White
• Container Size: 5 Gallon
• Component: Part A (Accelerator)
• Weight: 10.97 pounds
• Halogen Content: Low halogen

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010365971