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360PCS 3:1 Heat Shrink Tubing Kit

$22.99 USD
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SKU: HX1755
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Specification table for wire crimper and stripper tool sizes

360PCS 3:1 Heat Shrink Tubing Kit supplies eight adhesive-lined tubing sizes for wire insulation, splice protection and harness organization in automotive, marine, workshop and household electrical repairs. Choose by the largest part the tube must pass over and the smallest cable section it must seal.

Size and Quantity Guide
Before Diameter Quantity Approx. Recovered Diameter Length Shrink Ratio Construction Shrink Temperature
3/32 in / 2.4mm 130 Approx. 0.8mm 45mm / 1.7 in 3:1 Adhesive-lined dual wall 257°F / 125°C
1/8 in / 3.2mm 90 Approx. 1.1mm 45mm / 1.7 in 3:1 Adhesive-lined dual wall 257°F / 125°C
3/16 in / 4.8mm 50 Approx. 1.6mm 45mm / 1.7 in 3:1 Adhesive-lined dual wall 257°F / 125°C
1/4 in / 6.4mm 35 Approx. 2.1mm 45mm / 1.7 in 3:1 Adhesive-lined dual wall 257°F / 125°C
5/16 in / 7.9mm 16 Approx. 2.6mm 60mm / 2.3 in 3:1 Adhesive-lined dual wall 257°F / 125°C
3/8 in / 9.5mm 12 Approx. 3.2mm 60mm / 2.3 in 3:1 Adhesive-lined dual wall 257°F / 125°C
1/2 in / 12.7mm 15 Approx. 4.2mm 60mm / 2.3 in 3:1 Adhesive-lined dual wall 257°F / 125°C
5/8 in / 15mm 12 Approx. 5.0mm 60mm / 2.3 in 3:1 Adhesive-lined dual wall 257°F / 125°C

Recovered diameters are approximate values based on the specified 3:1 ratio. Confirm fit on the actual wire, splice or terminal before installation.

Applications

Use this multi-size kit to insulate finished wire splices, protect terminal transitions, add strain relief and organize cable harnesses. The adhesive-lined dual-wall construction supports moisture-resistant repairs when the selected tube fully seals to compatible cable insulation. Do not use tubing as a substitute for a mechanically sound electrical connection.

How to Choose
  1. Measure the widest connector, splice or terminal the tubing must pass over.
  2. Select a supplied diameter larger than that widest point.
  3. Check that the approximate recovered diameter is smaller than the cable section to be sealed.
  4. Choose the 45mm or 60mm length that covers the repair with adequate overlap on both sides.
How to Use
  1. Disconnect power and slide the selected tube onto the wire before completing the joint.
  2. Center the tubing over the finished connection.
  3. Apply controlled heat evenly from the center outward while keeping the heat source moving.
  4. Stop when the tubing has fully recovered and the adhesive forms an even seal; allow it to cool before handling or energizing.

Do not use an open flame or continue heating after full recovery.

Frequently Asked Questions

What sizes are included in the 360PCS kit?

The kit includes 3/32, 1/8, 3/16, 1/4, 5/16, 3/8, 1/2 and 5/8 inch supplied diameters. Piece counts are listed in the table and total 360 pieces.

How do I choose the right heat shrink tube size?

Choose a supplied diameter that clears the largest part of the connection, then confirm the approximate recovered diameter will grip the smallest cable section.

What does a 3:1 shrink ratio mean?

The tubing can recover to approximately one-third of its supplied diameter when heated correctly, allowing it to pass over a splice and tighten around the cable.

What temperature should I use?

The product specification lists a 257°F (125°C) shrink temperature. Apply controlled heat evenly, keep the heat source moving and stop after full recovery and sealing.

Related Guides and Tubing

Compare more options in the Heat Shrink Tubing Collection, or use the Heat Shrink Tubing Size Guide before selecting a diameter.
 
 
 
 

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  • Keep it organized: The durable portable toolbox will not break during movement; ensure that the various connectors do not interfere with each other and are neat and orderly.
  • High Quality Connectors: The heat-shrinkable insulation is flexible and won't break, pure copper conducts electricity strongly, and the adhesive melts at the proper temperature and wraps the wires tightly to achieve a waterproof connection. Can be used in professional wire connection procedures.
  • Buyer Confidence: We stand behind the quality of our products. If for any reason you are not satisfied with your purchase, please contact us. We offer a 30-day money-back guarantee and a 12-month replacement warranty, giving customers a 100% satisfaction guarantee for risk-free purchases!

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You can return any item within 30 days of purchase. If you wish to return a product, you must notify Haisstronica within 7 days of receiving your item. Unfortunately due to logistics, we cannot accept return requests after this period.
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Refunds will be provided after the items have been received and inspected by Haisstronica. A 10% stocking fee will be deducted from the total amount.
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