Wirefy Heat Shrink Tubing Kit – 3:1 Ratio Adhesive Lined, a resistant Shrink Wrap – Automotive Industrial Heat-Shrink Tubing – Black, Red – 200 PCS

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Who We Are

Wirefy is a small USA-owned and operated business. We offer top-quality electrical connectors, crimping tools, heat shrink tubing and electrical wires at reasonable prices.

Wirefy empowers electricians and DIY lovers to make professional electrical connections through quality products and education. We’ve got you covered on your wiring project.

Benefits of Our Products

What makes our electrical connectors unique?

We craft electrical connectors from thick, pure copper for strong crimps and max current flow. Tin coating protects against corrosion. Our terminals are fitting everyones needs.

Why choose Wirefy crimping tools?

Our crimping tools come with high-precision crimping dies designed specifically for every terminal type. Our tools ensure consistent, effortless and rock-solid crimps.

How to choose the right heat shrink tubing?

Go for 3:1 or 4:1 shrink ratio. This ensures a tighter seal. Make sure it has adhesive lining for protection against dust and water.

3:1 SHRINK RATIO – Recovers to 1/3 of its original diameter, and makes a tight seal. Eliminates the problem of 2:1 tubing not shrinking tight enough.
GLUE INSIDE – When heat is applied, adhesive comes out and seals the connection, creating resistant and long-lasting insulation.
VARIETY OF SIZES – We have included larger diameter heat shrink tubing ranging from 1/8″ to 1″. Shrink tubing is precut to 1.75 inches.
EASY TO USE – Simply slide heat shrink tube over your connection point and apply heat. Professional connections made in seconds.
DUAL WALL TUBING – Outer wall provides abrasion resistance. Inner wall creates resistant seal and strain relief.


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