3M 7000132378 Heat Shrink Cable Sleeve 48 in 12-6 Awg

Product Description

The 3M 7000132378 is a heavy-wall, heat-shrinkable cable sleeve designed to protect electrical splices, connections, and terminations rated up to 1 kV. Constructed from cross-linked polyolefin with a factory-applied internal adhesive and sealant, it delivers both mechanical and environmental protection once shrunk in place. The sleeve measures 48 inches in length, is cut-to-length ready, and is sized for 12-6 AWG conductors. Its heavy-wall construction is highly split resistant, and the material shrinks rapidly to speed up installation. Electricians and cable termination specialists working on low-voltage power distribution installations rely on this sleeve for durable, code-compliant splice protection.

This cable sleeve is suited for residential and commercial electrical applications where conductor splices, connections, and terminations require insulation and sealing up to 1 kV. The 48-inch length allows field technicians to cut sections to the exact required length, reducing waste and accommodating a range of splice geometries. It is appropriate for use in conduit, junction boxes, and exposed wiring assemblies where both moisture ingress and mechanical abrasion are concerns.

Key Features

• Cross-linked polyolefin construction — highly split resistant and dimensionally stable after shrink
• Factory-applied internal adhesive and sealant provides environmental sealing upon installation
• Fast-shrinking material reduces installation time compared to standard-wall sleeves
• Cut-to-length 48-inch sleeve accommodates multiple splice sizes from a single piece
• Rated to 1 kV — UL Listed 486D for 600V (File Number E102356) with CSA rating
• Compatible with 12-6 AWG conductors

Compatibility

Designed as an OEM-style replacement and field-use heat shrink sleeve for 12-6 AWG conductors in low-voltage electrical splice and termination applications rated up to 1 kV.

Installation Notes

Installation is performed by licensed electricians following applicable NEC guidelines for splice insulation and conductor protection. Power must be de-energized and the circuit verified dead before applying any sleeve over a splice or termination. Apply uniform heat with a heat gun — avoid open flame — moving evenly along the sleeve length to achieve a consistent shrink and full adhesive flow. Verify the sleeve has fully conformed to the conductor and that sealant has flowed from both ends before returning the circuit to service.

Technical Specifications

• Conductor Range: 12-6 AWG
• Voltage Rating: 1 kV (UL Listed 486D for 600V)
• Length: 48 inches
• Material: Cross-linked polyolefin
• Adhesive: Factory-applied internal adhesive and sealant
• Weight: 0.26 pounds
• Certifications: UL Listed 486D, File Number E102356; CSA Rated

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000132378