Are the dimensions listed the recovered or unrecovered size?

Hi, The 4:1 shrink ratio simply means that it recovers to 1/4 of its original diameter. I hope this helps! You can contact us directly if you need more info.

Can it be used with self regulating heat cable

Hi, We do not recommend it because it will generally be kept at a higher temperature, up to 120℃, occasionally as high as 175℃.

Can this be used to cover banana plugs in use with speaker wire?

Thank you for your question. Yes, it can be used to cover banana plugs in use with speaker wire.

Can these be used to reinforce the wire leading to earbuds? The rubber has ripped exposing a small window of the wires.

You could if you are very careful as the heat needed to use for these could very easily melt the wires for your ear buds. You may be better off using liquid tape.

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Wirefy Heat Shrink Tubing Kit 190 PCS - 4:1 Ratio Adhesive Lined, Wire Shrink Wrap Tubing - Industrial Heat-Shrink Tubing - Black & Red - Shrink Wrap Tubing | UL Listed

Wirefy Heat Shrink Tubing Kit 190 PCS - 4:1 Ratio Adhesive Lined, Wire Shrink Wrap Tubing - Industrial Heat-Shrink Tubing - Black & Red - Shrink Wrap Tubing | UL Listed

Product ID: 426084227

Details

Brand
Wirefy
Manufacturer
Wirefy
Material
Polyolefin
Number of Packs
1
Product Dimensions
1.75"L x

💧Water & oil proof adhesive lining

🔥4:1 shrink ratio for ultra-tight seal

🛡️Dual wall abrasion & strain resistance

Description

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

BUILT TO LAST - Dual wall design offers superior abrasion resistance and strain relief for long-term durability in harsh environments.
CERTIFIED SAFETY - UL-listed and compliant with SGS, RoHS, Reach, and ISO9001 standards for trusted electrical insulation.
SHRINK LIKE A PRO - 4:1 ratio tubing recovers to 1/4 original size, sealing wires tighter than standard 3:1 kits.
SEAL OUT THE ELEMENTS - Heat-activated adhesive lining creates a waterproof, oil-proof bond that locks out moisture and corrosion.
COLOR CODED CONVENIENCE - Includes 190 pre-cut sleeves in black & red for quick identification and professional wire management.

Wirefy’s Heat Shrink Tubing Kit features a high-performance 4:1 shrink ratio that ensures a snug, gap-free fit around wires and terminals. Its heat-activated adhesive lining forms a waterproof and oil-proof seal, perfect for automotive, marine, and outdoor electrical repairs. The dual wall construction provides enhanced abrasion resistance and strain relief, while the kit’s 190 pre-cut black and red sleeves offer versatile, color-coded solutions. UL-listed and certified to rigorous safety standards, this kit delivers professional-grade insulation and protection for critical wiring projects.

Specifications

ASIN	B09NW7954L
Best Sellers Rank	#70,371 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #214 in Industrial Heat-Shrink Tubing
Brand Name	Wirefy
Customer Reviews	4.8 4.8 out of 5 stars (1,288)
Item Dimensions L x W	1.75"L x 1.75"W
Item Length	1.75 Inches
Item Weight	9.12 ounces
Manufacturer	Wirefy
Manufacturer Part Number	Wirefy-DW41-190-B-R
Material Type	Polyolefin
Model Number	Wirefy-DW41-190-B-R
UPC	850026973464
Unit Count	190.0 Count

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