3M 7100039251 Instant Adhesive RT3500B Black 1 Fl Oz

Product Description

The 3M 7100039251 is a rubber toughened instant adhesive formulated with a high-viscosity, gap-filling construction. Sold under the Scotch-Weld line, RT3500B delivers tough, flexible bonds that maximize impact resistance, peel strength, and thermal cycling resistance. The black formulation is designed for trade and industrial applications where dissimilar or flexible substrates need a fast, durable bond. Licensed adhesive applicators, maintenance technicians, and assembly professionals are the primary installers of this product.

RT3500B is suited for bonding flexible substrates and dissimilar materials in applications where standard cyanoacrylate adhesives fall short. Its high viscosity allows it to fill minor surface gaps, making it practical for field repairs and controlled production environments alike. The adhesive is used across HVAC, refrigeration, plumbing, and general industrial maintenance where rubber, plastic, or composite components require a resilient, flexible bond that can withstand movement and temperature variation.

Key Features

• High-viscosity, gap-filling formula accommodates minor surface irregularities
• Rubber toughened chemistry maximizes impact and peel resistance
• Thermal cycling resistance maintains bond integrity through temperature fluctuations
• Bonds flexible substrates and dissimilar materials
• Black color blends with dark rubber and polymer surfaces
• 1 fl oz bottle for targeted, controlled application

Compatibility

Designed for bonding flexible substrates and dissimilar materials including rubber, plastics, and composites where a tough, flexible instant adhesive bond is required.

Installation Notes

Surface preparation is critical — clean and degrease all bonding surfaces before application. Apply adhesive to one surface only and bring parts together with light, even pressure. Allow full cure time before subjecting the bond to load, vibration, or thermal stress. Follow applicable workplace safety guidelines for cyanoacrylate-based adhesives, including adequate ventilation and skin contact precautions.

Technical Specifications

• Weight: 0.1 pounds
• Volume: 1 fl oz
• Color: Black
• Viscosity Type: High viscosity, gap filling
• UOM: Each
• UPC: 00051111916650

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100039251