3M 7100037322 Heat Shrinkable Cable Breakout Boot

Product Description

The 3M 7100037322 is a heat shrinkable cable breakout boot designed to insulate and seal cable breakouts in multiconductor armored or sheathed cables and conduit ends. Manufactured from flame retardant, cross-linked polyolefin, this boot meets the material requirements of MIL-I-81765-1 and features an internal adhesive lining that activates during shrinking to create a reliable environmental seal. The 2-way outlet configuration accommodates branching cable runs where a single cable transitions into two separate paths. Electricians and cable assembly technicians install this boot as part of a complete termination or splice protection system.

This breakout boot is suited for commercial, industrial, and military-grade cable assembly applications where multiconductor armored or sheathed cables require organized, protected transitions. The HDBB-220-1-250 series is appropriate for use at conduit ends and in any installation where moisture ingress, mechanical stress, or electrical exposure at a cable breakout point presents a service risk. It is sold individually, making it practical for single-point repairs or small-scale termination work.

Key Features

• Flame retardant, cross-linked polyolefin construction meets MIL-I-81765-1 material requirements
• Internal adhesive lining provides environmental sealing as the boot shrinks
• 2-way outlet design accommodates multiconductor cable branching
• Black color supports standard cable identification and UV resistance in typical installations
• Delivers electrical insulation and mechanical protection at cable breakout points

Compatibility

Designed as an OEM-style replacement and standard fitment for multiconductor armored or sheathed cables and conduit end terminations requiring heat shrinkable breakout boot protection.

Installation Notes

Installation is typically performed by licensed electricians or qualified cable assembly technicians. De-energize all circuits and verify zero voltage before handling any cable termination or splice point. Apply heat evenly using a heat gun rated for the shrink range of polyolefin materials, working from the center outward to the boot edges to prevent air pockets. Follow applicable NEC requirements for the installation environment and conductor type.

Technical Specifications

• Material: Flame retardant, cross-linked polyolefin
• Outlet Configuration: 2-way
• Color: Black
• Internal Coating: Adhesive lining for environmental sealing
• Military Specification: MIL-I-81765-1
• Unit of Measure: Each
• Minimum Order Quantity: 1

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100037322