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3M CPT-4 Cold Shink Corrosion Protection Kit

Manufacturer: 3M | Catalog # CPT-4 | Irby Part # 3110950

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3M™ Cold Shrink Corrosion Protection Kit CPT Series are designed to provide a quick and easy method for protecting bulkhead termination connectors from the corrosive influences of wet and salt-fog installation environments. A CPT series assembly is an open-ended tubular rubber sleeve which is factory expanded and assembled onto a removable core. The core is removed after the assembly has been positioned for installation over a bulkhead terminator connector. Mastic strips are provided for sealing between NPT fitting threads and the enclosure in use (junction box, cabinet, panel board, etc.). CPT insulating sleeves are made of an EPDM rubber that contains no chlorides or sulfers.

Technical Information

For Standard and Hazardous Locations
Wire Size
2.9 in

Manufacturer Information

Family Brand Name

General Product Info

Product UPC


13 Inch
  • Provides tight sealing between NPT fitting threads and the enclosure using mastic strips
  • Includes an insulator assembly, mastic seal strip pack and instruction sheet
  • Insulator is formulated with EPDM rubber which contains no chlorides or sulfur
  • Offers protection from wet and salt-fog installation environments
  • Designed to provide protection for bulkhead termination connectors
  • Ideal for use in standard and hazardous locations