3M 7100001145 Epoxy Adhesive Part B 5 Gallon

Product Description

The 3M 7100001145 is the Base (Part B) component of the Scotch-Weld Epoxy Adhesive 420 two-part toughened epoxy system. Sold in a 5-gallon container, this off-white Part B pairs with its corresponding Part A hardener at a 2:1 mix ratio to form a structural adhesive with a 20-minute working life and handling strength reached in approximately 2 hours. The cured adhesive delivers good shear and peel strengths along with resistance to impact and general wear. Licensed applicators and assembly professionals install this product in bonding operations across industrial, manufacturing, and construction environments.

This adhesive is suited for bonding metals, ceramics, wood, and select plastics in demanding assembly or repair applications. The 2-hour handling time supports production workflows where moderate cure speed is required. The 5-gallon container size is intended for high-volume use, making it appropriate for shop-floor or production-line dispensing operations rather than small-batch field repairs. It is the Part B component only and must be used in conjunction with the corresponding Part A to achieve the intended adhesive performance.

Key Features

• Two-part toughened epoxy formulation with a 2:1 mix ratio (B to A)
• 20-minute working life allows time for part positioning and adjustment
• Handling strength reached in approximately 2 hours
• Bonds to metals, ceramics, wood, and select plastics
• Good shear and peel strengths with impact resistance
• 5-gallon container sized for high-volume production use

Compatibility

This is the Base (Part B) component of the Scotch-Weld Epoxy Adhesive 420 two-part system. It must be used with the corresponding Part A component at a 2:1 mix ratio. It is not a standalone adhesive.

Installation Notes

Surface preparation is critical to bond performance — clean, dry, and contaminant-free surfaces are required before application. Mix Part B and Part A at the specified 2:1 ratio only; incorrect ratios will compromise cure and final strength. Follow all applicable safety data sheet guidelines for ventilation, personal protective equipment, and storage. Consult the product technical data sheet for substrate-specific preparation and curing requirements.

Technical Specifications

• Mix Ratio: 2:1 (B to A)
• Work Life: 20 minutes
• Handling Strength Time: Approximately 2 hours
• Color: Off-white
• Container Size: 5 gallon
• Weight: 10.46 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100001145