28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color
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28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color

28mm Heat Shrink Tubing 2:1 Waterproof Cable Sleeving — Non-Slip, Multi-Color

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Beschreibung

 

28mm Heat Shrink Tubing — Waterproof Cable Protection for Automotive, Marine & DIY Wiring

Exposed wire splices and bare connectors are a liability — moisture, vibration, and abrasion can cause shorts, corrosion, and costly failures. Whether you're a weekend DIYer rewiring a trailer, an auto technician bundling a harness, or a hobbyist finishing an electronics project, you need a sleeve that grips, seals, and stays put.

Each piece of this 28mm heat shrink tubing measures 1 metre (≈39.4") in length with a pre-shrink inner diameter of 28mm (1-1/8") and a 2:1 shrink ratio, reducing to approximately 14mm (9/16") when heat is applied. Available in six colors — Black, Red, Purple, Green, Blue, and Yellow — so you can color-code circuits at a glance. The non-slip surface texture helps the sleeve stay aligned during installation.

Typical applications include automotive wiring harness protection, marine cable bundling, battery terminal insulation, and general-purpose electrical repair. The waterproof construction makes it a reliable choice for under-hood environments, outdoor junction boxes, and anywhere moisture resistance matters in cable heatshrink sleeving projects.

ℹ️ Compatibility: Fits cables and connectors with an outer diameter up to approximately 28mm (1-1/8"). After shrinking at 2:1 ratio, minimum recovered diameter is approximately 14mm (9/16"). Suitable for standard PVC-insulated wire, multi-conductor cables, and connector boots.
⚠️ Size Tip: Measure your cable bundle diameter before ordering. If your bundle is close to 28mm, contact us to confirm fit — we carry additional sizes to suit a wide range of applications.

✅ Key Features of These 28mm Heat Shrink Tubes

  • 🔥2:1 Shrink Ratio — Shrinks from 28mm (1-1/8") down to approximately 14mm (9/16"), creating a firm, conforming grip around cables, connectors, and terminals for secure waterproof cable sleeving.
  • 💧Waterproof Construction — Designed to resist moisture ingress, making it suitable for automotive underhood wiring, outdoor junction protection, and marine cable bundling applications.
  • 🤚Non-Slip Texture — The textured outer surface prevents the sleeve from rotating or sliding during heat application, keeping it correctly positioned over the joint or splice.
  • 🎨6 Color Options — Black, Red, Purple, Green, Blue, and Yellow allow easy circuit identification and color-coded wiring organization in complex harness or panel builds.
  • ✂️Cut-to-Length Flexibility — Each 1 metre (≈39.4") piece can be trimmed to any shorter length with standard scissors, reducing waste and fitting a wide range of connector and splice lengths.
  • 🔌Broad Application Range — Works with standard electrical wire, battery cables, trailer wiring, and hobby electronics — anywhere you need durable, insulating heat shrink tubing for cable repair.

📐 Technical Specifications — 28mm Heat Shrink Tubing

Inner Diameter (Before Shrink) 28mm (1-1/8")
Recovered Inner Diameter (After Shrink) Approximately 14mm (9/16") at 2:1 ratio
Shrink Ratio 2:1
Length per Piece 1 metre (≈39.4")
Available Colors Black, Red, Purple, Green, Blue, Yellow
Waterproof Yes
Non-Slip Surface Yes
Activation Temperature Typically 70–150°C (158–302°F) — See variant options
Material See variant options / Contact us to confirm
Wall Thickness (Before Shrink) See variant options
Recommended Application Tool Heat gun (open flame not recommended)
Typical Use Cases Automotive wiring, marine cables, battery terminals, DIY electrical repair

❓ Frequently Asked Questions

How do I choose the right heat shrink tubing size?

Select a tube whose inner diameter (before shrinking) is larger than your cable or connector, but small enough that after shrinking at a 2:1 ratio it grips firmly. This 28mm (1-1/8") tube shrinks down to approximately 14mm (9/16"). Measure your cable bundle diameter and choose a size that is typically 20–30% larger than the bundle for a secure fit.

What temperature is needed to shrink this tubing?

Heat shrink tubing of this type generally activates at around 70°C (158°F) and fully shrinks at approximately 120–150°C (248–302°F). A heat gun is recommended for even, controlled shrinkage. Avoid open flames where possible to prevent uneven shrinking or scorching.

Is this heat shrink tubing waterproof?

Yes. This tubing is designed with waterproofing properties that help protect connections from moisture ingress. For fully submersed or marine applications, we recommend contacting us to confirm the specific protection level before purchase.

Can I use this tubing on automotive wiring?

Absolutely. The 28mm inner diameter and 2:1 shrink ratio make it well-suited for bundling and protecting automotive wiring harnesses, battery cables, and connector boots. The non-slip texture helps keep the sleeve in place during installation, even in tight engine bay spaces.

What is a 2:1 shrink ratio and why does it matter?

A 2:1 shrink ratio means the tubing shrinks to half its original inner diameter when heat is applied. This 28mm tube will recover to approximately 14mm, creating a snug, protective sleeve. A tighter recovered fit generally means better insulation, moisture resistance, and mechanical protection for your cable or connector.

Does the color affect performance or durability?

No. All six color options — Black, Red, Purple, Green, Blue, and Yellow — are made from the same material and offer identical performance. Color coding is useful for identifying circuits or wiring runs in complex installations, such as trailer wiring or multi-circuit control panels.

How long is each piece and can I cut it to a shorter length?

Each piece is 1 metre (approximately 39.4 inches) long. It can be cut to any shorter length with scissors or a utility knife before or after shrinking, making it easy to cover short connector joints or longer cable runs without waste.

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

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