3M 7000031842 Butt Splice Terminal Heat Shrink Crimp-on Red 25pk

Product Description

The 3M 7000031842 is a fully insulated, heat shrink butt splice terminal designed for making secure, moisture-resistant electrical splices in wire harnesses, control panels, and field wiring applications. The crimp-on connection method provides a reliable mechanical and electrical bond without solder. The red color coding indicates compatibility with a specific wire gauge range. At 1.2 inches in overall length, the terminal is compact enough for tight junction boxes and enclosures. Licensed electricians, HVAC technicians, and panel wiring professionals rely on this style of connector for fast, code-compliant wire terminations. Each package contains 25 terminals.

This butt splice terminal is suited for residential and light commercial electrical work, HVAC low-voltage and line-voltage wiring repairs, and control panel assembly. The heat shrink insulation sleeve activates after crimping, conforming tightly around the wire ends to provide both mechanical strain relief and environmental protection against moisture ingress. It is a practical choice for service technicians making field splices in conditioned or exposed environments where a clean, insulated termination is required.

Key Features

• Fully insulated heat shrink sleeve provides moisture resistance and strain relief after activation
• Crimp-on connection eliminates the need for soldering in field splice applications
• Red color coding for quick wire gauge identification during installation
• 1.2 inches overall length suits compact enclosures and junction boxes
• UL Listed and CSA Certified for use in code-compliant electrical installations
• Sold in a package of 25 terminals to support service and repair workflows

Compatibility

Designed as an OEM-style replacement-grade crimp splice terminal for use in residential and commercial electrical, HVAC control wiring, and general wire repair applications requiring a fully insulated butt splice connection.

Installation Notes

Installation should be performed by a licensed electrician or qualified technician in accordance with the NEC and applicable local codes. De-energize the circuit completely before stripping wire ends and inserting them into the terminal barrel. Use a calibrated ratcheting crimp tool appropriate for heat shrink terminals to ensure a full, consistent crimp. After crimping, apply a heat gun evenly around the sleeve until the heat shrink material fully contracts and adheres to the wire insulation.