What temperature is needed to shrink this tubing?

Polyolefin heat shrink tubing typically activates at around 90°C (194°F) and fully shrinks at approximately 120°C (248°F). A heat gun is the recommended tool. Avoid open flames, which can scorch or unevenly shrink the tubing.

Is this tubing RoHS compliant and safe for electrical use?

This heat shrink tubing is made from polyolefin material, which is generally RoHS-compliant and flame-retardant. It is suitable for standard electrical insulation, wire bundling, and strain relief applications. Contact us to confirm specific compliance certifications for your project.

Can I use scissors or a knife to cut the tubing to length?

Yes. Polyolefin heat shrink tubing cuts cleanly with sharp scissors or a utility knife before shrinking. For clean cuts after shrinking, a sharp blade or wire cutters work well. Cut slightly longer than needed — you can always trim after shrinking.

6.5mm Heat Shrink Tubing 2:1 – Black Electrical Wire Sleeve & Cable Wrap

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6.5mm Heat Shrink Tubing 2:1 – Black Electrical Wire Sleeve & Cable Wrap

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By HomeDIYer®

Color: Black

Length: 1 Meter

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$6.24 USD

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6.5mm Heat Shrink Tubing 2:1 — Reliable Electrical Insulation for Every Wire Job

Whether you're chasing down a wiring fault in your vehicle, tidying up a home electrical panel, or protecting exposed connections on a DIY electronics build, bare or poorly insulated wires are a safety hazard you can't ignore. This 6.5mm heat shrink tubing gives hobbyists, auto technicians, and electricians a fast, clean way to insulate, protect, and organize cables without tape that unravels or connectors that corrode.

Each roll is black polyolefin heat shrink tubing with a 2:1 shrink ratio — meaning it shrinks to approximately half its original diameter (from 6.5mm / ≈¼" down to roughly 3.25mm / ≈⅛") when heat is applied. Available in lengths from 1 meter (≈3.3 ft) up to 100 meters (≈328 ft), so you can grab exactly what your project calls for. The tubing slides easily over wire ends and cable bundles before shrinking, then conforms tightly for a secure, professional finish.

Ideal for automotive wiring harness repair, marine cable protection, home electrical projects, and DIY electronics — anywhere you need a durable, flame-retardant sleeve that keeps connections safe and organized. The 6.5mm heat shrink tubing is also widely used for strain relief on power cords and for color-coding or labeling wire bundles in control panels.

🔌 Compatibility: Fits cables and wire bundles up to approximately 6.5mm (≈¼") outer diameter. After shrinking, snugly covers cables typically in the 3–5mm range. Verify your cable OD before ordering.

✅ Key Features of These 6.5mm Heat Shrink Tubing Sleeves

🔥2:1 Shrink Ratio — Shrinks from 6.5mm (≈¼") to approximately 3.25mm (≈⅛"), creating a tight, conforming sleeve around wire splices, terminals, and cable ends.
⚡Electrical Insulation — Polyolefin material provides reliable dielectric insulation for wire repair, connector protection, and exposed terminal coverage in automotive and household wiring.
🛡️Flame-Retardant Construction — Meets general flame-retardant standards for electrical sleeve applications, reducing risk in enclosed wiring environments such as junction boxes and engine bays.
✂️Easy to Cut and Apply — Cuts cleanly with scissors before shrinking; apply evenly with a heat gun for a smooth, wrinkle-free finish on cable wrap and wire bundling jobs.
📏Multiple Length Options — Available from 1m to 100m rolls so you can match the quantity to your project — from a single automotive wire repair to a full wiring harness installation.
🌡️Wide Operating Temperature Range — Polyolefin heat shrink tubing generally withstands continuous operating temperatures from approximately -55°C to +125°C (−67°F to +257°F), suitable for under-hood and industrial environments.

📐 Technical Specifications — 6.5mm Heat Shrink Tubing

Product Type	Heat Shrink Tubing / Electrical Wire Sleeve
Material	Polyolefin (flame-retardant)
Color	Black
Inner Diameter (Before Shrink)	6.5mm (≈¼")
Inner Diameter (After Shrink)	Approximately 3.25mm (≈⅛")
Shrink Ratio	2:1
Shrink Temperature	Typically 90–120°C (194–248°F)
Operating Temperature	Generally −55°C to +125°C (−67°F to +257°F)
Available Lengths	1m, 5m, 10m, 20m, 30m, 50m, 100m
Wall Thickness (After Shrink)	See variant options
Voltage Rating	Contact us to confirm
Compliance	Contact us to confirm

⚠️ Note: Specifications such as wall thickness and voltage rating may vary by production batch. Contact us to confirm exact values for critical electrical applications.

❓ Frequently Asked Questions

What length of heat shrink tubing do I need?

Measure the total length of wire or cable you need to cover, then add 10–15% extra for overlap and trimming. For single repairs, 1m (≈3.3 ft) or 5m (≈16.4 ft) is typically sufficient. For wiring harnesses or larger projects, 10m–50m rolls are generally more economical. Use the formula: total coverage needed × 1.15 = recommended roll length.

What does 2:1 shrink ratio mean?

A 2:1 shrink ratio means the tubing shrinks to approximately half its original inner diameter when heat is applied. This 6.5mm tubing will typically shrink down to roughly 3.25mm (≈⅛"), forming a tight sleeve around your wire or cable. Always ensure your cable's outer diameter is smaller than 6.5mm so the tubing slides on before shrinking.

What wire or cable diameter does 6.5mm heat shrink tubing fit?

This tubing is designed to slide over cables or wire bundles up to approximately 6.5mm (≈¼") in outer diameter before shrinking. After shrinking, it typically fits snugly around cables in the 3–5mm range. Always measure your cable's outer diameter before ordering to ensure a proper fit.

Can this heat shrink tubing be used outdoors or in wet environments?

Standard polyolefin heat shrink tubing generally provides basic moisture resistance once fully shrunk, making it suitable for light outdoor or under-hood use. For prolonged outdoor, marine, or fully waterproof applications, adhesive-lined (dual-wall) heat shrink tubing is generally recommended, as it creates a sealed barrier against moisture ingress.

What tool do I use to shrink the tubing, and what temperature is needed?

A heat gun is the recommended tool for shrinking polyolefin tubing. Activation typically begins around 90°C (194°F), with full shrinkage occurring at approximately 120°C (248°F). Move the heat gun evenly along the tubing to avoid hot spots. Avoid open flames — they can scorch or unevenly shrink the sleeve, compromising insulation quality.

Is this tubing safe for automotive and electrical wiring applications?

Yes. Polyolefin heat shrink tubing is widely used in automotive wiring harness repair, home electrical projects, and DIY electronics. It is generally flame-retardant and provides reliable electrical insulation for standard low-voltage wire splices, terminal covers, and cable strain relief. For high-voltage or safety-critical applications, contact us to confirm specific ratings.

How do I cut the tubing to the right length?

Cut the tubing with sharp scissors or a utility knife before applying heat — it cuts cleanly and easily. Cut pieces slightly longer than needed (add about 5mm / ≈3/16" on each end) to allow for any shrinkage along the length. After shrinking, trim any excess with scissors or a sharp blade for a neat finish.

🛒 Select your color and length above, then add to cart — ships from our US warehouse.

6.5mm Heat Shrink Tubing 2:1 – Black Electrical Wire Sleeve & Cable Wrap

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Description

6.5mm Heat Shrink Tubing 2:1 — Reliable Electrical Insulation for Every Wire Job

✅ Key Features of These 6.5mm Heat Shrink Tubing Sleeves

📐 Technical Specifications — 6.5mm Heat Shrink Tubing

❓ Frequently Asked Questions

6.5mm Heat Shrink Tubing 2:1 – Black Electrical Wire Sleeve & Cable Wrap

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