Is the diameter on each tube the original size (pre-shrinking)?

Yes.Size is before shrinking,3/32 shrinks to 0.8mm. 1/8 shrinks to 1.1mm. 3/16 shrinks to 1.6mm. 1/4 shrinks to 2.1mm. 3/8 shrinks to 3.2mm. 1/2 shrinks to 4.2mm. 3/4 shrinks to 6.0mm

Can this be used to join two tubes together? Does the glue just seal the ends or the entire tube?

If the tubes and the heat shrink tubes fit snugly after heating them I'm sure it would work well. This is very durable heat shrink, thicker than most. Keep in mind also, it's 3:1 shrink. Glue throughout the tubing.

What is the max temperature on these heat shrink tubes? Can I put it in the car engine bay?

Operating temperature: -55℃～125℃.They can be used in an engine bay.

Our heat shrink tubing kits are produced in China,but I can say after using these on a number of projects and boat rewiring they don't leak or seem to be affected by oil/gas/saltwater,and they've held up over time which is all that matters.

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🔥 Seal it tight, seal it right — shrink your worries away!

SIZE MATTERS - 7 versatile diameters pre-cut for instant use—perfect fit for any project
MULTI USE MASTERY - Ideal for automotive, marine, DIY, and industrial wiring—protects against moisture, chemicals, and wear
SHRINK LIKE A PRO - 3:1 ratio ensures a snug, professional-grade seal every time
SPEED MEETS PRECISION - Rapid heat activation contracts tubing in seconds—no waiting, no fuss
BUILT TO BRAVE THE ELEMENTS - Marine-grade dual wall design offers unbeatable abrasion resistance and waterproofing

The Eventronic 400 Pcs Heat Shrink Tubing Kit features a superior 3:1 shrink ratio with fast contraction speed, ensuring a tight, professional seal. Its adhesive-lined dual-wall tubing provides durable, waterproof insulation with high abrasion resistance, suitable for marine and industrial applications. Available in 7 pre-cut sizes, this kit is a versatile solution for electrical insulation, environmental sealing, and surface protection.

AR$53289

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TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Eventronic 400 Pcs Heat Shrink Tubing Kit-3:1 Ratio Adhesive Lined,Marine Grade Shrink Wrap - Industrial Heat-Shrink Tubing - Black

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