12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths
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12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths

12mm Heat Shrink Tubing – 2:1 Ratio, 7 Colors, 1–10m Lengths

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Beschreibung

12mm Heat Shrink Tubing — Reliable Wire Insulation for Automotive, Marine & DIY Electrical Projects

Whether you're splicing wires under the dashboard, tidying up a marine electrical panel, or protecting exposed cables in a home workshop, loose or uninsulated connections are a safety hazard and a headache to trace later. This 12mm heat shrink tubing gives electricians, mechanics, and hands-on DIYers a clean, durable way to insulate, seal, and organize wire connections of all kinds.

Each order is a continuous length of 2:1 ratio polyolefin heat shrink tubing with a 12mm (≈15/32") inner diameter before shrinking, reducing to approximately 6mm (≈15/64") after heat is applied. Available in lengths of 1 metre (≈3.3 ft), 2 metres (≈6.6 ft), 5 metres (≈16.4 ft), and 10 metres (≈32.8 ft), and offered in seven colors — Black, White, Red, Green, Yellow, Blue, and Transparent — so you can match your project's color-coding needs.

Typical applications include automotive wire harness repair, boat and RV electrical wiring, speaker wire termination, battery cable insulation, and general-purpose cable sleeve protection for home and workshop use. The transparent variant is especially useful when you need to inspect the connection underneath without removing the sleeve.

🔌 Compatibility: Fits wire bundles and connectors up to approximately 11.5mm in diameter before shrinking. Suitable for use with standard heat guns, automotive wiring, marine-grade cables, and general low-voltage electrical applications. Shrink temperature typically 90–120°C (194–248°F).

✅ Key Features of These 12mm 2:1 Heat Shrink Tubing Sleeves

  • 🔥2:1 Shrink Ratio — Shrinks from 12mm down to approximately 6mm, forming a tight, conforming sleeve around wires, connectors, and cable bundles for a secure, professional finish.
  • 🎨7 Color Options — Available in Black, White, Red, Green, Yellow, Blue, and Transparent, making it easy to color-code automotive circuits, marine wiring panels, or multi-wire harnesses at a glance.
  • 📏Four Length Choices — Order exactly what you need: 1m for quick repairs, 2m for small projects, 5m for wiring harnesses, or 10m for workshop stock and larger electrical installations.
  • 🛡️Polyolefin Insulation Material — Provides electrical insulation and generally resists moisture, mild chemicals, and abrasion — a dependable choice for automotive wire sleeve protection and outdoor cable runs.
  • 👁️Transparent Variant for Inspection — The clear option lets you visually verify solder joints or connector crimps without cutting the sleeve — useful for quality checks in marine and panel wiring applications.
  • ✂️Easy to Cut and Apply — Cuts cleanly with standard scissors or a utility knife; shrinks evenly with a heat gun or carefully applied heat source, with no adhesive mess or special tools required.

📐 Technical Specifications — 12mm Polyolefin Heat Shrink Tubing

Inner Diameter (Before Shrink) 12mm (≈15/32")
Inner Diameter (After Shrink) Approximately 6mm (≈15/64")
Shrink Ratio 2:1
Material Polyolefin
Available Colors Black, White, Red, Green, Yellow, Blue, Transparent
Available Lengths 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), 10m (≈32.8 ft)
Activation Temperature Typically 90°C (194°F); full shrink at approx. 120°C (248°F)
Wall Thickness (After Shrink) See variant options
Voltage Rating Contact us to confirm
Compliance Contact us to confirm
Recommended Application Tool Heat gun (lighter usable with caution)
Typical Use Automotive wiring, marine electrical, DIY cable management
⚠️ Sizing Note: The 12mm measurement refers to the inner diameter before heat is applied. Always measure your wire bundle or connector diameter before ordering to ensure a proper fit. If you're unsure, contact us and we'll help you select the right size.

❓ Frequently Asked Questions

How do I choose the right length of heat shrink tubing?

Measure the total length of wire or splice you need to cover, then add at least 10–15% extra to account for shrinkage along the length axis. For a single wire splice, 1m is typically sufficient. For wiring harnesses or longer cable runs, 5m or 10m rolls offer better value. Select your preferred length from the variant options above.

What does 2:1 shrink ratio mean?

A 2:1 shrink ratio means the tubing will shrink to approximately half its original inner diameter when heat is applied. This 12mm tubing will generally shrink down to around 6mm, creating a snug, insulating sleeve around your wire or connector.

Can this heat shrink tubing be used outdoors or in automotive applications?

Yes. Polyolefin heat shrink tubing is generally resistant to moisture, UV exposure, and common automotive fluids, making it suitable for car wiring, marine electrical systems, and outdoor cable protection. For extreme environments, confirm the specific temperature and chemical resistance ratings with us before ordering.

What wire sizes does 12mm heat shrink tubing fit?

Before shrinking, the 12mm inner diameter typically accommodates wire bundles or connectors up to approximately 11–11.5mm in diameter. After shrinking, it fits snugly around objects down to roughly 6mm. It is well-suited for multi-wire bundles, larger gauge cables, and connector boots. See variant options for exact sizing.

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. A lighter or match can work in a pinch but may cause uneven shrinkage or scorching — use with caution.

Does the color affect performance or insulation properties?

No — all color variants share the same electrical insulation and shrink performance. Color is used for wire identification and organization. Black is the most common choice for general use, while colored variants (red, blue, green, yellow, white) are ideal for color-coding circuits in automotive, marine, or panel wiring.

Is this tubing RoHS compliant and safe for electrical use?

This heat shrink tubing is generally manufactured from polyolefin material, which is commonly used in RoHS-compliant electrical applications. If you require specific compliance documentation for a commercial or industrial project, please contact us to confirm before ordering.

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

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