Cold shrink technology: building on 40+ years of 3M innovation

Since inventing Cold Shrink more than 40 years ago, we have continuously improved our technology to offer cable accessories that are reliable, safe, and easy to install, with excellent performance.

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A ‘living seal’ – for long term performance and protection.

  • A 'living seal' - for long term performance and protection.

    3M Cold Shrink products contain elastomeric bonds, giving them elasticity similar to rubber bands. When stretched and then allowed to shrink onto a cable, they exert a strong inward force that produces a constant squeezing effect on the cable – providing excellent electrical performance, and superior environmental sealing compared to heat shrink cable accessories.

     

    It’s a dramatic difference you can immediately see in this demonstration video!


An electrical worker standing in an electrical substation.

Time to unwind

Discover what 3M™ Cold Shrink Technology can do for you. From easier installation to improved environmental sealing – with 3M™ Cold Shrink Cable Accessories.

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The cold shrink revolution

For over 60 years, professional electrical workers have trusted 3M for innovative solutions that enhance safety and productivity. That’s why we invented Cold Shrink technology: a revolutionary alternative to traditional heat shrink cable joints and terminations that can be installed in a fraction of the time, without the need for special equipment or permits.

With faster, easier installation, and the long-term reliability provided by superior environmental sealing, 3M™ Cold Shrink Medium Voltage Cable Accessories can help you achieve improved efficiency and performance, as well as significant cost savings.


Cold shrink products


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Cold shrink technology

Since inventing cold shrink more than 40 years ago, we have continuously improved our technology to offer cable accessories that are reliable, safe, and easy to install, with excellent performance.

  • A snowflake icon.

    The “cool science” of cold shrink technology

    Fast and easy one-step installation


    • Enables installation in 1/3 of the time or less compared to heat shrink
    • No special tools or work permits required
    • Easier to install in tight spaces or inclement weather
    • Easy to learn and train

    Long-term reliability


    • Dynamic ‘living seal’ expands and contracts with variations in temperature and load on the cable
    • Designed to last the life of the cable while ensuring excellent electrical performance
    • Low failure rates*:
      ⁃ 0.067% for molded joints/splices
      ⁃ 0.022% for terminations

     

  • A flame icon.

    Why heat shrink may not be your best choice

    More complex installation

     

    • Performance highly dependent on installer skill
    • Requires torch and hot work permit
    • Increases required time and potentially costs
    • Installation may require shut-down for facilities containing combustible gasses

     

     

    Reliability concerns

     

    • Non-integrated design does not allow for factory testing for Medium Voltage Splices
    • Creates a static seal that does not expand or contract with the cable, potentially leading to the creation of voids between the cable accessory and the cable, which may potentially lead to failure

     

     

     

  • *Data based upon U.S. failure data of U.S. manufactured 3M Cold Shrink Medium Voltage Cable Accessories between 2009 and 2012.

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  • A close-up of a 3M™ Cold Shrink Product on a cable.

    A ‘living seal’ – for long term performance and protection.

    3M™ Cold Shrink Products contain elastomeric bonds, giving them elasticity similar to rubber bands. When stretched and then allowed to shrink onto a cable, they exert a strong inward force that produces a constant squeezing effect on the cable – providing excellent electrical performance, and superior environmental sealing compared to heat shrink cable accessories.


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Tools to make your job go smoothly

  • Onsite training

    Request training from one of our professionals. We'll meet you at your office or in the field. Subject to availability.

  • Ask an expert

    Have a question about grid reliability or renewable energy applications? Let us help you solve your toughest challenges.


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