3M 7000132421 Medium-wall Cable Sleeve Mdt 48 Inches

Product Description

The 3M 7000132421 is a heat-shrinkable, medium-wall cable sleeve in the MDT series, designed for reliable protection of cables and wire bundles in demanding electrical and industrial environments. Constructed from cross-linked polyolefin, this sleeve is split-resistant and flame-retardant, offering strong resistance to abrasion, corrosion, and chemical exposure. Each sleeve measures 48 inches in length and comes with a factory-applied thermoplastic adhesive sealant that softens during heating, bonds to the underlying surface, and fills small voids for a secure, weatherproof seal. Licensed electricians and experienced cable technicians are the primary installers of this product type.

This MDT cable sleeve is suited for residential, commercial, and light industrial wiring applications where mechanical and environmental protection is required. The medium-wall construction offers greater flexibility compared to heavy-wall alternatives, making it appropriate for installations where cable movement or vibration is a factor. The sleeve ships in an unprinted finish and is ready for installation straight from the case. It is ordered by expanded inside diameter to match the target cable or bundle size.

Key Features

• Cross-linked polyolefin construction provides split resistance and long-term durability
• Flame-retardant material meets safety requirements for electrical cable management
• Factory-applied adhesive sealant bonds during heat application and fills surface voids
• 48-inch length supports coverage of extended cable runs or larger splice areas
• Greater flexibility than heavy-wall HDT series sleeves, reducing stress on cables
• Fast shrink rate reduces installation time with minimal training required

Compatibility

Designed as an OEM-style replacement or field-use heat shrink sleeve for electrical cable protection applications. Order by expanded inside diameter to confirm proper fitment for the target cable or wire bundle diameter.

Installation Notes

Installation should be performed by a qualified electrician or cable technician familiar with heat shrink procedures. De-energize all circuits and verify zero-voltage lockout before working on any cable assembly. Apply heat evenly along the sleeve using an appropriate heat gun, working from the center outward to prevent air pockets. Do not overheat the sleeve, as excessive temperatures can damage the adhesive sealant or the underlying cable insulation.

Technical Specifications

• Material: Cross-linked polyolefin with thermoplastic adhesive sealant
• Wall Type: Medium-wall
• Flame Rating: Flame-retardant
• Length: 48 inches
• Finish: Unprinted
• Weight: 1.53 pounds
• UPC: 00054007406792

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000132421