Wirefy 1/4" Heat Shrink Tubing - 4:1 Ratio - Adhesive Lined - Marine Grade Heat Shrink - 50 Feet Roll - Black

Wirefy 1/4" Heat Shrink Tubing - 4:1 Ratio - Adhesive Lined - Marine Grade Heat Shrink - 50 Feet Roll - Black

Q: Air tight? Was thinking about using this to cover flare fittings on a mini-split hvac for support.

Hi, Yes, our heat shrink tubing is air tight. If you have any other questions, please feel free to send us a direct message.

Q: what size should i get to fit (3) 10AWG wires to make an extension cord ?

Depending on the type of wire and how thick the casing on the 10 gage wire. You might get away with 3/8 but I think it would be very tight, especially if long. So be safe and use 1/2 inch.. You will b fine. Look a the wire you are getting at its specs. It should tell you major dia. Add the 3 up. 2/3rds of you total will be bare minimum . But remeber if you make it to tight before shrinking. It will be hard to slide wire through.

4.8/5

Product ID: 431179810

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Details

Brand
Wirefy
Material
Polyolefin
Colour
Black
Product dimensions
15.24L x 0.01W
Maximum pressure
10 Bars

⚡Rated for 600V electrical insulation

📏4:1 shrink ratio for ultra-tight fit

🛡️Adhesive-lined for waterproof, durable seal

Frequently Bought Together

Wirefy 1/4" Heat Shrink Tubing - 4:1 Ratio - Adhesive Lined - Marine Grade Heat Shrink - 50 Feet Roll - Black

Wirefy 1/8" Heat Shrink Tubing - 3:1 Ratio - Adhesive Lined - a resistant Heat Shrink - Black - 50 Feet Roll

Description

🔥 Seal it tight, shine bright — the pro’s choice for flawless connections!

DUAL WALL DURABILITY - Outer abrasion-resistant layer plus inner adhesive layer deliver unmatched protection and strain relief in marine and industrial environments.
GENEROUS 50 FOOT ROLL - Ample length to power through multiple projects without constant reordering—perfect for DIY pros and managers who value efficiency.
BUILT IN ADHESIVE LINING - Activates with heat to create a waterproof, corrosion-resistant bond that protects your connections for the long haul.
UL CERTIFIED 600 V RATED - Meets rigorous safety standards, giving you peace of mind on every electrical job, from home upgrades to professional installations.
PRECISION 4 1 SHRINK RATIO - Ensures a snug, professional-grade seal that outperforms standard 3:1 tubing—no loose ends, no compromises.

Wirefy’s 1/4" Heat Shrink Tubing features a superior 4:1 shrink ratio and adhesive lining that activates with heat to create a waterproof, corrosion-resistant seal. This marine-grade, dual-wall polyolefin tubing is UL certified and rated for 600 volts, making it ideal for professional electrical insulation and strain relief. The 50-foot black roll offers ample length for multiple projects, combining durability and ease of use for DIY enthusiasts and professionals alike.

Specifications

Manufacturer	Wirefy
Part number	Wirefy-DW41-6-B
Item Weight	299 g
Product Dimensions	19 x 6.5 x 19 cm; 299 g
Item model number	Wirefy-DW41-6-B
Size	1/4" - 50 Feet
Color	Black
Style	Black
Material	Polyolefin
Voltage	600 Volts
Item Package Quantity	1
Specification met	UL
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Air tight? Was thinking about using this to cover flare fittings on a mini-split hvac for support.

what size should i get to fit (3) 10AWG wires to make an extension cord ?

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Good experience, but the tracking updates could be better.

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

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