Do you sell these kits without the adhesive lining?

At the moment we do not offer heat shrink tubing kits without adhesive lining.

Can a hair dryer be used to heat the tubes?

Thank you for your question. We recommend using a heat gun as a heat source.

what would be the correct size for 6242Y grade 2.5mm twin and earth cable? the cable measure 10mm x 5mm

If you are electrical engineer by trade your ansawer to your question should be why. Why are you using this shrink wrap on any type of twin & earth. If its been cut or broken then unless you have good knowledge of ac cabling and I presume you're competently qualified in this I would not suggest using it in any ac environment. By way of your disciption, if there is some kind of brake or join in two wires (cables) you would normally solder the joints and shrink wrap the joint to seal and secure. If in case of ac use only a joiner like waggo ect which is rated appropriately, if in doughty with any ac diy activity seek qualified abilities, you may only regret it soon or later if you don't. A bodge can kill😕🤔

Is this suitable for use in an aquarium?

It’s plastic so pretty inert. It depends on what you want to do with it.

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Wirefy Heat Shrink Tubing Kit - 3:1 Ratio Adhesive Lined, Marine Grade Shrink Wrap - Automotive Industrial Heat-Shrink Tubing - Black, Red, White, Clear, Blue - 275 PCS

Product ID: 231283956

Details

Brand
Wirefy
Material
Polyolefin
Number of Packs
1
Product dimensions
44L x 44W
Recommended uses for product
Electrical

💧Adhesive-lined for waterproof protection

🔥3:1 shrink ratio for ultra-tight seal

🛠️275-piece kit with 7 versatile sizes

Description

🔥 Seal it tight, protect it right — the ultimate heat shrink kit for flawless wiring!

DUAL WALL DURABILITY - Outer abrasion-resistant layer plus inner adhesive wall provide unmatched protection and strain relief.
COMPREHENSIVE SIZE VARIETY - Seven essential diameters pre-cut to 1.75 inches, covering all your automotive and industrial wiring needs.
PRECISION 3 1 SHRINK RATIO - Ensures a snug fit that’s 3x tighter than standard tubing—no loose ends, no compromises.
WATERPROOF ADHESIVE LINING - Heat-activated glue seals out moisture and dust, delivering marine-grade durability for any environment.
EFFORTLESS PROFESSIONAL FINISH - Slide on, apply heat, and achieve clean, reliable insulation in seconds—perfect for pros and DIYers alike.

The Wirefy Heat Shrink Tubing Kit offers 275 pre-cut, marine-grade polyolefin sleeves with a superior 3:1 shrink ratio and adhesive lining for waterproof, abrasion-resistant wire protection. Featuring seven versatile sizes and dual-wall construction, this kit delivers professional-grade insulation and strain relief for automotive, industrial, and marine applications.

Specifications

ASIN	B084GWYX42
Best Sellers Rank	92,720 in DIY & Tools ( See Top 100 in DIY & Tools ) 48 in Tubes (DIY & Tools)
Brand	Wirefy
Customer Reviews	4.6 4.6 out of 5 stars (24,836)
Item Dimensions L x W	44L x 44W millimetres
Item Length	1.75 Inches
Item Weight	20 Grams
Manufacturer	Wirefy
Material	Polyolefin
Model Number	Wirefy-DWT-275
Number of Items	1
Number of Packs	1
Part Number	Wirefy-DWT-275
Recommended Uses For Product	Electrical Insulation, Moisture Protection, Strain Relief
UPC	857409007464
Unit Count	275 count

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