Heat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 Lengths
Heat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 Lengths
Heat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 Lengths
Heat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 Lengths
Heat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 Lengths
Heat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 Lengths
Heat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 Lengths
Heat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 Lengths
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Heat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 LengthsHeat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 LengthsHeat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 LengthsHeat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 LengthsHeat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 LengthsHeat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 LengthsHeat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 LengthsHeat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 Lengths

Heat Shrink Tubing 2:1 Ratio — φ18mm to φ30mm, 7 Colors, 5 Lengths

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Beschreibung

Heat Shrink Tubing 2:1 Ratio — Reliable Insulation for Every Wire Diameter

Loose wire ends, exposed splices, and unlabeled cable bundles are a frustration in any shop, vehicle, or electrical panel. Whether you're a DIYer finishing a home wiring project, an auto technician building a harness, or a maker tidying up a control box, having the right heat shrink tubing on hand makes the difference between a clean, professional result and a job that looks improvised.

This heat shrink tubing is made from flame-retardant polyolefin with a 2:1 shrink ratio, meaning each tube shrinks to approximately half its original inner diameter when heat is applied. Available in six diameters — φ18mm (≈0.71"), φ20mm (≈0.79"), φ22mm (≈0.87"), φ25mm (≈0.98"), φ28mm (≈1.10"), and φ30mm (≈1.18") — and five cut lengths from 1m (≈3.3 ft) to 20m (≈65.6 ft). Choose from seven colors: Black, White, Red, Green, Yellow, Blue, and Transparent.

Typical applications include insulating wire splices and terminal connections, bundling multi-conductor cables in automotive wiring harnesses, providing strain relief on plugs and connectors, and color-coding circuits in electrical panels or control cabinets. The transparent option is especially useful when you need to see the underlying wire or retain a printed label.

ℹ️ Compatibility Note: This tubing uses a standard 2:1 shrink ratio and fits wire and cable ODs from approximately 9mm to 28mm depending on the size selected. Verify the recovered diameter against your component before ordering. For waterproof or adhesive-lined applications, contact us to confirm the right product.

✅ Key Features of These Heat Shrink Tubes

  • 🔥2:1 Shrink Ratio — Shrinks to approximately half its original inner diameter, providing a snug, secure fit over wire splices, terminals, and cable ends without requiring adhesive.
  • 🛡️Flame-Retardant Polyolefin — Made from polyolefin material that resists ignition and self-extinguishes, making it suitable for use in automotive, marine, and electrical enclosure environments.
  • 🎨7 Colors for Circuit Identification — Black, White, Red, Green, Yellow, Blue, and Transparent options let you build a consistent color-coding system for wiring harnesses, control panels, and cable management.
  • 📏6 Diameter Options (φ18mm–φ30mm) — Covers a wide range of cable and connector sizes, from mid-gauge wire bundles up to large-diameter conduit ends and strain relief applications.
  • 📦5 Length Options (1m–20m) — Order exactly what you need for a single repair or stock up with a 10m or 20m roll for ongoing shop, fleet, or production use.
  • 💧Moisture and Chemical Resistance — Provides a protective barrier against moisture ingress, mild oils, and common solvents, helping extend the service life of wire connections in demanding environments.

📐 Technical Specifications — Heat Shrink Tubing 2:1 Polyolefin

Material Flame-retardant polyolefin
Shrink Ratio 2:1
Available Diameters (Expanded) φ18mm (≈0.71"), φ20mm (≈0.79"), φ22mm (≈0.87"), φ25mm (≈0.98"), φ28mm (≈1.10"), φ30mm (≈1.18")
Recovered Diameter (approx.) φ9mm, φ10mm, φ11mm, φ12.5mm, φ14mm, φ15mm respectively
Available Lengths 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), 10m (≈32.8 ft), 20m (≈65.6 ft)
Colors Black, White, Red, Green, Yellow, Blue, Transparent
Activation Temperature (typical) Approximately 70–90°C (158–194°F)
Full Recovery Temperature (typical) Approximately 120°C (248°F)
Wall Thickness (recovered, typical) See variant options
Adhesive Lined No (standard 2:1; contact us for adhesive-lined options)
Flame Rating Flame-retardant (self-extinguishing)
Recommended Tool Heat gun (open flame not recommended)
⚠️ Size Selection Tip: The expanded diameter listed is the tubing's inner diameter before shrinking. Choose a size where the expanded ID is larger than your cable OD, and the recovered ID (approximately half) is smaller. If you are unsure, contact us to confirm before ordering.

❓ Frequently Asked Questions

How do I choose the right diameter for my heat shrink tubing?

Measure the outer diameter of the wire or connector you need to cover. Choose a tubing size whose recovered (shrunk) diameter is slightly smaller than your component. For example, φ18mm tubing shrinks to approximately 9mm — ideal for cables in the 8–16mm range. When in doubt, size up one step to ensure easy installation before shrinking.

What is the shrink ratio and what does 2:1 mean?

A 2:1 shrink ratio means the tubing will shrink to approximately half its original inner diameter when heat is applied. So φ20mm tubing will recover to roughly 10mm. This ratio is the most common for general-purpose wire insulation and cable bundling.

What temperature is needed to shrink the tubing?

This polyolefin heat shrink tubing typically activates at around 70–90°C (158–194°F) and fully recovers at approximately 120°C (248°F). A standard heat gun is recommended. Avoid open flames, which can cause uneven shrinkage or scorching.

Is this heat shrink tubing suitable for outdoor or marine use?

This tubing is generally suitable for indoor and protected outdoor environments. It provides good resistance to moisture, UV, and mild chemicals. For fully waterproof or marine-grade applications, we recommend using adhesive-lined (3:1 ratio) heat shrink tubing instead, which creates a sealed barrier.

What wire gauges or connector types is this compatible with?

This tubing is compatible with a wide range of wire gauges and connector types. The φ18mm size is generally suited for multi-conductor cables, larger connectors, and wire bundles. Sizes φ20mm–φ30mm are typically used for thicker cable assemblies, conduit ends, and strain relief on larger plugs. Always verify the recovered diameter against your component's OD before ordering.

Can I use this for color-coding wires and cables?

Yes — this is one of the most practical uses. With 7 available colors (Black, White, Red, Green, Yellow, Blue, Transparent), you can establish a consistent color-coding system for electrical panels, automotive wiring harnesses, or workshop cable management. Transparent tubing lets you see the underlying wire or label.

How much length do I need for my project?

For single repairs or small jobs, 1m or 2m is typically sufficient. For wiring harness builds, panel work, or ongoing shop use, 5m–10m rolls offer better value. The 20m option is well-suited for production runs or contractors who regularly work with cable assemblies.

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

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