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

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.

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

⚡600V rated marine-grade 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 professional ⚡

DUAL WALL PROTECTION - Outer abrasion-resistant layer plus inner adhesive barrier deliver unmatched strain relief and waterproofing.
GENEROUS 50 FOOT ROLL - Ample length to power through multiple projects—never run short when precision matters most.
BUILT IN ADHESIVE SEAL - Heat activates a strong glue lining that locks out moisture and ensures long-lasting protection.
MARINE GRADE DURABILITY - Certified UL and rated for 600 volts, perfect for harsh environments and critical electrical projects.
PRECISION 4 1 SHRINK RATIO - Achieve a snug, professional seal that outperforms standard 3:1 tubing every time.

Wirefy's 1/4" heat shrink tubing features a superior 4:1 shrink ratio and adhesive lining for a waterproof, durable seal. Marine-grade and UL certified, this 50-foot black polyolefin roll offers dual-wall protection and 600V insulation, making it the go-to choice for professionals demanding reliable, long-lasting electrical connections.

Specifications

Manufacturer	Wirefy
Part number	Wirefy-DW41-6-B
Item Weight	280 g
Product Dimensions	19 x 6.5 x 19 cm; 280 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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