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110PCS 3:1 Heat Shrink Tubing Kit

Sale price$13.99 USD
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Specification table for wire crimper and stripper tool sizes

110PCS 3:1 Heat Shrink Tubing Kit provides six red, adhesive-lined tubing sizes for small electrical repairs, splice insulation and wiring-harness protection. Every piece is 90mm (3.5 inches) long; choose a supplied diameter that clears the widest part of the joint and recovers tightly around the cable.

Size and Quantity Guide
Before Diameter Quantity Approx. Recovered Diameter Length Shrink Ratio Material Shrink Temperature
3/4 in / 19mm 6 Approx. 6.3mm 90mm / 3.5 in 3:1 Adhesive-lined dual-wall polyolefin 257°F / 125°C
1/2 in / 12.7mm 10 Approx. 4.2mm 90mm / 3.5 in 3:1 Adhesive-lined dual-wall polyolefin 257°F / 125°C
3/8 in / 9.5mm 9 Approx. 3.2mm 90mm / 3.5 in 3:1 Adhesive-lined dual-wall polyolefin 257°F / 125°C
1/4 in / 6.3mm 15 Approx. 2.1mm 90mm / 3.5 in 3:1 Adhesive-lined dual-wall polyolefin 257°F / 125°C
3/16 in / 4.8mm 25 Approx. 1.6mm 90mm / 3.5 in 3:1 Adhesive-lined dual-wall polyolefin 257°F / 125°C
1/8 in / 3.2mm 45 Approx. 1.1mm 90mm / 3.5 in 3:1 Adhesive-lined dual-wall polyolefin 257°F / 125°C

Recovered diameters are approximate values based on the specified 3:1 ratio. The listed counts total 110 pieces.

Applications

Use this assortment to insulate finished splices, cover terminal transitions, add strain relief and protect compatible automotive, marine, workshop and household low-voltage wiring. The adhesive-lined dual-wall construction supports a moisture-resistant seal when the selected size fully grips compatible cable insulation.

Do not use heat-shrink tubing as a substitute for a mechanically sound electrical connection or outside the equipment manufacturer’s temperature and installation requirements.

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. Confirm the approximate recovered diameter is smaller than the cable section to be sealed.
  4. Allow enough of the 90mm length to overlap sound insulation on both sides of the repair.
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 rotating the workpiece.
  4. Stop when the tubing has fully recovered and adhesive forms an even seal.
  5. Allow the joint to cool before bending, pulling or energizing it.

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

Frequently Asked Questions

What sizes are included in the 110PCS kit?

The kit contains 1/8, 3/16, 1/4, 3/8, 1/2 and 3/4-inch red tubing. All pieces are 90mm long, and the size counts total 110 pieces.

How do I choose the correct heat shrink size?

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

What does the 3:1 shrink ratio mean?

The tubing can recover to approximately one-third of its supplied diameter when heated correctly.

What temperature should I use?

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

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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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