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

Product ID: 716713605

Details

Brand
Eventronic
Colour
Black
Indoor/outdoor use
Outdoor
Material
Polyvinyl
Style
Industrial

🔥3:1 shrink ratio for precise fit

⚙️400 pieces for versatile industrial use

🛡️Adhesive-lined for waterproof seal

€ 57.87

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

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Description

🔥 Seal it tight, shrink it right – the pro’s choice for flawless wiring!

ULTIMATE PROTECTION - Adhesive lining creates a waterproof, corrosion-resistant barrier for outdoor and marine environments.
TRUSTED BY THOUSANDS - 4.7-star rating from over 3,600 users proves this kit delivers consistent, high-quality performance.
DURABLE MARINE GRADE PVC - Industrial-strength material withstands harsh conditions, keeping your connections safe and secure.
PRECISION FIT EVERY TIME - 3:1 shrink ratio ensures snug, reliable coverage on wires and cables.
BULK READY FOR ANY PROJECT - 400-piece kit offers unmatched versatility for professional and DIY electrical tasks.

The Eventronic 400 Pcs Heat Shrink Tubing Kit features a 3:1 shrink ratio and adhesive lining, providing a waterproof, corrosion-resistant seal ideal for industrial, marine, and outdoor electrical applications. With durable polyvinyl chloride construction and a massive 400-piece count, this kit is designed for professionals and enthusiasts seeking reliable, versatile wire protection.

Specifications

ASIN	B0BVVMCY86
Brand	Eventronic
Built-In Media	400 Pcs Heat Shrink Tubing Kit-3:1 Ratio Adhesive Lined
Color	Black
Colour	Black
Customer Reviews	4.7 out of 5 stars 3,622 Reviews
Enclosure Material	Polyvinyl Chloride
Indoor Outdoor Usage	Outdoor
Indoor/outdoor use	Outdoor
Manufacturer	Eventronic
Material	Polyvinyl Chloride
Mfr Part Number	HST-400
Model Number	HST-400
Number of Pieces	400
Number of pieces	400
Style	Industrial
Style Name	Industrial
Unit Count	400 Count

Reviews

I**N

Good quality for 30mm coverage

Good quality just make sure you know they are short so if jou need more than 30 mm coverage look for longer shrinksleeves.

16.03.2026

C**C

Krympslang

Funkar som dom ska.

5.10.2024

D**D

Easy peeze

Good shipper On time delivery Would buy again

18.01.2025

S**T

Better than expected

Really good sleeves. Good shrinkage and tight hold. Much thicker walled than I'd expected at this price. Would definitely recommend them, and will buy again.

27.08.2024

E**T

Klare Kaufempfehlung

Hervorragender Schrumpfschlauch – Evotronic liefert Top-Qualität! Ich bin restlos begeistert von diesem Evotronic Schrumpfschlauch! Ich habe die transparente Version mit Innenkleber für verschiedene Projekte im Hobbybereich und bei der Auto-Elektrik verwendet und die Ergebnisse sind fantastisch. Was mir besonders gefällt: Kristallklare Transparenz: Der Schlauch ist wirklich sehr klar, was perfekt ist, um die Lötstelle oder den darunterliegenden Draht zu überprüfen, ohne den Schutz zu entfernen. Ideal für eine saubere Optik und einfache Fehlerkontrolle! Starker Klebstoff: Der Innenkleber ist ein echter Game-Changer. Er dichtet die Verbindung nach dem Schrumpfen hervorragend ab, macht sie wasserdicht und sorgt für einen festen, vibrationsresistenten Halt. Perfektes Schrumpfverhalten: Der Schlauch schrumpft schnell, gleichmäßig und erreicht ein perfektes, eng anliegendes Ergebnis ohne zu reißen oder auszuhärten. Die Handhabung ist sehr einfach, egal ob mit Heißluftfön oder einem geeigneten Feuerzeug. Hohe Flexibilität und Robustheit: Er bleibt nach dem Abkühlen flexibel, was bei beweglichen Verbindungen wichtig ist, und bietet gleichzeitig einen sehr robusten mechanischen Schutz. Fazit: Wer einen hochwertigen, zuverlässigen und optisch ansprechenden Schrumpfschlauch sucht, der gleichzeitig versiegelt, sollte unbedingt zum Evotronic mit Klebstoff greifen. Klare Kaufempfehlung!

24.09.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Ali H.

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

1 day ago

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€ 57.87

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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