3M 2:1 Ratio Heat Shrink Tubing

A Flexible, General Purpose Tubing

We Guarantee to Have the Best Price

What's special about this 2:1 3m heat shrinkable tubing?

  • Shrinks to 1/2 of its original size, making it perfect for irregular shapes or large connectors
  • Many different colors available for color coding wires
  • Great for insulation to prevent shorts or other dangerous conditions
  • Click for More Features
ULCSA Approved

3M offers their 2:1 heat shrink tubing in a variety of sizes, as well as many different colors. Colored 3M heat shrink tubes are perfect for insulating electrical splices and terminations, as well as harnessing wires, wire marking, and providing cables with a fire resistant covering. You will find the 3M 2:1 heat shrink you need for any job.

  • Made from flame retardant polyolefin to last for many years
  • Many different sizes available for use in many different applications, including color-coding wires or protecting damaged cords
  • Only available in 25, 50 or 100 ft spools, for individual lengths please click here
  • Minimum shrinking temperature is 194° F (90°C); a heat gun is required
  • Highly resistant to chemicals and oils, to keep your cables or wires safe from corrosion
  • Made by 3M for a better quality product
  • UL E35506, MIL-DTL-23053/5, CSA LR31929


Mil Specs MIL-DTL-23053/5 Class 1 (colors) Class 2 (Clear)
UL E35506 (except Clear) 600V 125°C (257°F)
CSA LR31929 (except Clear) 600V 125°C (257°F)
Material Polyolefin
Recover temp. 121°C (250°F)
Dielectric Strength 900 Volts/mil
Continuous Oper. Temp. -55°C to 135°C (-67°F to 275°F)
Flammability Self-extinguish UL 224 (except Clear)


Size Recovered ID Recovered Wall Thickness
3/64" (0.0469) 0.023" 0.016"
1/16" (0.0625) 0.031" 0.017"
3/32" (0.0934) 0.046" 0.020"
1/8" (0.125) 0.062" 0.020"
3.16" (0.188) 0.093" 0.020"
1/4" (0.25) 0.125" 0.025"
3/8" (0.375) 0.187" 0.025"
1/2" (0.50) 0.250" 0.025"
3/4" (0.75) 0.375" 0.030"
1" 0.500" 0.035"







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Questions & Answers


I requested a quote yesterday, but never heard back.

Asked by Anonymous user on 01/25/2017 1:54 PM

  • - Thank you for your question. We would welcome an opportunity to work with you to better understand your project and requirements. Please call 866-222-0030 to discuss further

    thiago t. on 02/6/2017 4:24 PM

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by PowerReviews
National Standard Parts Associates Inc3M 2:1 Heat Shrink Tubing 0.0469 In. 25 Ft. Spool - Black

(based on 1 review)

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Professional finish

By Doug

from Michigan

Verified Buyer


  • Strong
  • Tidy


    Best Uses

    • Custom wiring jobs

    Comments about National Standard Parts Associates Inc 3M 2:1 Heat Shrink Tubing 0.0469 In. 25 Ft. Spool - Black:

    It gives our wiring harness a professional look and protects the leads. I would definatly purchase again.

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