Heat Shrink Tubing 2:1 Ratio — Electrical Wire Sleeving, φ11mm–φ50mm

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Beschreibung

Heat Shrink Tubing 2:1 Ratio — Reliable Wire Protection for Every Project

Whether you're a professional electrician, an automotive enthusiast, or a DIYer tackling a home wiring repair, exposed wire ends and bare connectors are a constant hazard. Loose insulation leads to shorts, corrosion, and failed connections — problems that are frustrating and sometimes dangerous. This heat shrink tubing gives you a clean, durable sleeve that locks onto your wires with a simple pass of a heat gun.

Each piece is made from polyolefin with a 2:1 shrink ratio, meaning it shrinks to approximately half its original diameter when heated. Available in 16 sizes from φ11mm (≈7/16") to φ50mm (≈2"), in 7 colors (Black, White, Red, Green, Yellow, Blue, Transparent), and in 1-meter or 5-meter lengths — so you can match the exact diameter, color, and quantity your project requires.

Typical use cases include insulating and protecting automotive wiring harnesses, bundling and labeling electrical cables in control panels, sealing marine wire connections against moisture, and color-coding low-voltage wiring in home automation or audio installations.

ℹ️ Compatibility Note: This is a standard single-wall 2:1 polyolefin heat shrink tube. It is compatible with copper, aluminum, and most insulated wire types. For fully waterproof sealing, consider adhesive-lined (dual-wall) tubing. Always verify the pre-shrink inner diameter is larger than your wire or connector before ordering.

✅ Key Features of These Heat Shrink Tubes

  • 🔥2:1 Shrink Ratio — Shrinks to approximately half its original diameter, creating a snug, uniform fit around wires, connectors, and cable bundles of varying sizes.
  • 📏16 Sizes in One Listing — Covers φ11mm through φ50mm, making this heat shrink wire sleeving suitable for everything from thin signal wires to large power cables and conduit bundles.
  • 🎨7 Color Options — Black, White, Red, Green, Yellow, Blue, and Transparent allow easy color-coding of electrical wiring systems, improving identification and reducing wiring errors.
  • 🛡️Polyolefin Construction — Offers solid resistance to moisture, abrasion, and common chemicals, making this electrical cable sleeving suitable for automotive, marine, and indoor electrical applications.
  • ✂️Cut-to-Length Flexibility — Available in 1m or 5m rolls; the tubing cuts cleanly with scissors or a utility knife, so you use exactly what you need with no waste.
  • Easy Heat Activation — Shrinks reliably with a standard heat gun at generally 90–120°C (194–248°F), with no special tools required for most automotive wiring harness repair or panel wiring tasks.

📐 Technical Specifications — Heat Shrink Tubing

Product Type Single-Wall Heat Shrink Tubing
Shrink Ratio 2:1
Material Polyolefin
Available Sizes (Pre-Shrink ID) φ11mm (≈7/16"), φ12mm (≈15/32"), φ13mm (≈1/2"), φ14mm (≈9/16"), φ15mm (≈19/32"), φ16mm (≈5/8"), φ18mm (≈23/32"), φ20mm (≈25/32"), φ22mm (≈7/8"), φ25mm (≈1"), φ28mm (≈1-1/8"), φ30mm (≈1-3/16"), φ35mm (≈1-3/8"), φ40mm (≈1-9/16"), φ45mm (≈1-3/4"), φ50mm (≈2")
Available Colors Black, White, Red, Green, Yellow, Blue, Transparent
Available Lengths 1 meter (≈3.3 ft) / 5 meters (≈16.4 ft)
Activation Temperature Typically 90–120°C (194–248°F)
Operating Temperature Range See variant options / Contact us to confirm
Voltage Rating Contact us to confirm
Waterproof Moisture-resistant (not fully waterproof; use adhesive-lined for waterproof applications)
Application Wire insulation, cable bundling, connector protection, color-coding
⚠️ Size Tip: The diameter listed (e.g., φ20mm) is the pre-shrink inner diameter. After heating, it will shrink to approximately half that size (≈10mm for φ20mm). Choose a size that fits loosely over your wire or connector before shrinking.

❓ Frequently Asked Questions

How do I choose the right diameter for my wires?

Measure the outer diameter of the wire or connector before shrinking. The tubing's pre-shrink inner diameter should be at least 10–20% larger than the object. With a 2:1 shrink ratio, the final diameter will be approximately half the listed size — for example, φ20mm tubing will shrink down to roughly 10mm (≈3/8"). When in doubt, size up slightly for easier installation.

What temperature is needed to shrink the tubing?

Generally, a heat gun set to around 90–120°C (194–248°F) is sufficient to activate the shrink. A standard heat gun works best; avoid open flames as they can scorch the tubing unevenly. Move the heat gun slowly along the length of the tubing for an even, wrinkle-free result.

Can this tubing be used outdoors or in wet environments?

This tubing is typically made from polyolefin, which provides good moisture resistance for general indoor and light outdoor use. For fully waterproof applications — such as marine wiring or underground connections — we recommend adhesive-lined (dual-wall) heat shrink tubing, which creates a sealed barrier when heated.

Is this tubing compatible with standard wire gauges and connectors?

Yes. The range of φ11mm to φ50mm covers most common wire gauges, butt connectors, ring terminals, and cable bundles used in automotive, marine, and household electrical work. Always verify the pre-shrink diameter against your connector size before ordering. If you're unsure, contact us with your wire gauge and we can recommend the right size.

How do I choose between 1-meter and 5-meter lengths?

The 1-meter length is ideal for single repairs or small projects where you only need a short section. The 5-meter length offers better value for ongoing electrical work, automotive wiring harness repairs, or workshop use where you need multiple pieces of the same size. In most cases, the 5-meter option works out to a lower cost per meter.

What colors are available and does color affect performance?

Available in Black, White, Red, Green, Yellow, Blue, and Transparent. Color does not affect electrical or mechanical performance — it is purely for identification, color-coding wiring systems, or aesthetic preference. Transparent tubing lets you see the underlying wire or label through the sleeve, which is useful for labeled or printed wire ends.

Can I cut the tubing to a shorter length before shrinking?

Yes. The tubing can be cut to any length with scissors or a utility knife before applying heat. Cut cleanly at a right angle for the neatest finish. Do not apply heat before cutting, as the tubing will be harder to cut cleanly once shrunk.

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

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