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Heat Shrink Tubing Sizes Chart

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What is Heat Shrink Tubing

Heat shrink is plastic tubing that shrinks when heat is applied. It is used to seal water, dust, and other contaminates from cable connections. Heat shrink can also be used as a strain relief.

Tessco delivers the best brands in the market by providing a variety of sizes, colors, and shrink ratios to suit any application. We also provide the tools and related items needed for seamless installation.



What Size Heat Shrink Tubing Do I Need?

Determining which heat shrink size is right for you corresponds to the size of its application. This is based on a 2:1 or 3:1 shrink ratio. To make the selection process easier, we have included a chart below to illustrate each measurement and the appropriate size for its application.

Typical Low Voltage Wire Sizes Guide


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