3M 7000132577 Heat Shrinkable Cable Breakout Boot

Product Description

The 3M 7000132577 is a heat shrinkable cable breakout boot designed to insulate and seal cable breakouts in multiconductor armored or sheathed cables and conduit ends. Sold as a single unit, this boot is manufactured from flame retardant, cross-linked polyolefin and meets the material requirements of MIL-I-81765-1. An internal adhesive coating is factory-applied to ensure reliable environmental sealing once the boot is shrunk in place. The 3-way outlet configuration covers a single cable splitting into three conductors, making it a practical solution for licensed electricians and industrial maintenance technicians working on sheathed or armored cable terminations.

This boot is suited for use in industrial, commercial, and utility electrical installations where multiconductor armored or sheathed cables require protected breakout points. Typical applications include cable tray runs, conduit end terminations, and junction points where environmental sealing and mechanical protection are both required. The black color and HDBB-320-1-250 designation identify this as a specific size and configuration within the 3M HDBB product family.

Key Features

• Heat shrinkable cross-linked polyolefin construction provides durable electrical insulation
• Flame retardant material meets MIL-I-81765-1 requirements
• Internal adhesive lining creates a reliable environmental seal when shrunk
• 3-way outlet configuration designed for multiconductor cable breakouts
• Compatible with armored, sheathed, and conduit-end cable terminations

Compatibility

Designed for use with multiconductor armored or sheathed cables and conduit ends where a 3-way breakout seal is required.

Installation Notes

Installation is typically performed by a licensed electrician in accordance with applicable NEC requirements. Power down and de-energize all conductors before fitting the boot over the cable breakout. Apply heat evenly using an appropriate heat gun, working from the center of the boot outward toward each outlet to allow the internal adhesive to flow and create a full environmental seal. Do not overheat or use an open flame, as this can damage the boot material.

Technical Specifications

• Material: Flame retardant cross-linked polyolefin
• Configuration: 3-way outlet
• Color: Black
• Internal Sealing: Factory-applied adhesive lining
• Military Spec Compliance: MIL-I-81765-1
• Unit of Measure: Each
• Minimum Order Quantity: 1

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000132577