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Introduction

Often times it is difficult to create a waterproof electrical connection that will survive underwater. Traditional methods include potting, which takes a long time to set, or using underwater connectors, which can be expensive. Through much lab and field testing we have found that connections can be done in a short amount of time and in a cheap way using adhesive lined heat shrink. These steps will walk you through the process.

Tools

Parts

No parts required.

You are going to want to cut each piece of heat shrink so it is about 5mm longer than the solder joint on either side
  • You are going to want to cut each piece of heat shrink so it is about 5mm longer than the solder joint on either side

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Use caution when soldering electronic components. The temperatures are 500 degrees and higher. Eye protection is required.
  • Use caution when soldering electronic components. The temperatures are 500 degrees and higher. Eye protection is required.

  • It is best to tin each wire before joining them.

  • You want to avoid sharp points on your solder connection, or frayed wire.

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Set your heat gun temperature to at least 250°F (121°C).
  • Set your heat gun temperature to at least 250°F (121°C).

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Make sure the inside lining is completely melted and oozes out each end.
  • Make sure the inside lining is completely melted and oozes out each end.

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Finish Line

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