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Seal, insulate and reinforce cable joints with a continuous 65-foot roll of 3/4 inch / 19.1mm dual-wall heat shrink tubing. The 3:1 recovery ratio and adhesive lining support automotive, marine, equipment and workshop wiring.
| Before Diameter | Recovered Diameter | Shrink Ratio | Wall Construction | Length | Temperature / Application |
|---|---|---|---|---|---|
| 3/4 inch / 19.1mm | Approximately 6.4mm | 3:1 | Dual-wall, adhesive-lined | 65 ft roll | large cable joints, battery leads, harness branches and marine wiring; use within the product-rated temperature limits |
Measure the largest component the tubing must pass over and confirm the recovered diameter will seal around the smallest cable section. Do not choose by wire gauge alone.
Blue, red, green, yellow and black variants are available.
The tubing can recover to about one-third of its supplied diameter when heated correctly.
The expanded size must clear the largest component, while the recovered size must seal tightly around the smallest section.
Use a controlled heat gun. An open flame can scorch the tubing and create an uneven seal.
Browse the heat shrink tubing collection or all wire connectors.


The solder seal wire connector heat-shrink tube made of EVA materials clearly allows the user to see the quality of the soldering penetration, which is one of the qualities that verify a quality connector!
The 3:1 heat shrink connector with adhesive lined will exude hot melt adhesive after being evenly heated, quickly shrink, and adhesion to the insulation of the wire. Create a complete environmental seal. Waterproof,Wear-resistant.

Crimping tool designed for heat shrink connectors, ratcheting mechanism, comfortable handles
Most items are usually shipped within 1-2 working days.
We do recommend allowing up to 3 weeks for your order in peak times, such as a special offer or promotion. Delivery times are beyond our control but rest assured give you the best service.
Your delivery confirmation email will contain your tracking number and order details.
Depending on the country of delivery, you may be required to pay extra tax or charges such as VAT and/or import duties.
We hope you love everything you purchase from Haisstronica but if you’re not 100% happy, we want to know about it. Please get in touch with all feedback about our products so we can continue improving our service for you.
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.
All items being returned must be in new and resalable condition.
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.
Shipping charges are non-refundable.
Taxes and any other charges incurred by the customer are non-refundable.