Heat shrink for RC wires
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  • Heat shrink for RC wires
  • 4 mm 2:1 red and black shrink tube
  • Heat shrink tubing 4.0 mm
  • Heat shrink tubing 4.0 mm 2:1 red black set 2 m

Heat Shrink Tubing 4.0 mm 2:1 red + black set 2 m (1 m + 1 m)

1.39
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Heat Shrink Tubing 4.0 mm 2:1 red + black set 2 m

Durable 4 mm 2:1 heat shrink tubing for RC and FPV wiring and solder protection

The 4.0 mm (2:1) heat shrink tubing made of flexible polyolefin provides reliable insulation, solder joint protection and clean wire management in RC and FPV electronics. When heated, it shrinks down to approximately 2.0 mm, forming a durable and tight protective layer. The set includes 1 m red and 1 m black tubing, ideal for polarity marking.

Key features and benefits

  • • 2:1 shrink ratio — from 4.0 mm down to approx. 2.0 mm
  • • Fits thicker RC wiring — ideal for 16–20 AWG cables
  • • Includes 1 m red + 1 m black tubing for polarity identification
  • • Chemical resistance — withstands oils, greases and model fuels
  • • Environmental resistance — moisture, UV and temperature changes
  • • Halogen-free material — safe for electronics and users
  • • High flexibility and durability — protects against abrasion
  • • Clean and professional wire management
  • • Easy application — shrinks easily with a heat gun or hot-air
  • • Operating temperature range: –55°C to +125°C
  • • Strong mechanical protection for exposed wires

Technical specifications

  • • Diameter before shrink: 4.0 mm
  • • Diameter after shrink: approx. 2.0 mm
  • • Shrink ratio: 2:1
  • • Material: polyolefin heat-shrink
  • • Shrink temperature: > 90°C
  • • Operating temperature: –55°C to +125°C
  • • Flammability rating: UL94 HB

Applications

  • • Insulating 16–20 AWG wires
  • • Protecting XT30, XT60, JST, SM and solder joints
  • • Securing motor wires and FC/ESC harnesses
  • • Polarity marking (red = positive, black = negative)
  • • Reinforcing insulation on high-stress wires
  • • Cable management in RC models and FPV drones

How to use

  • • Cut the tubing to the required length
  • • Slide it over the wire or solder area
  • • Apply even heat with a heat gun or hot-air tool
  • • The tubing shrinks to approx. 2.0 mm
  • • Allow it to cool before handling


How to choose the correct size

4.0 mm tubing is suitable for wires with an outer diameter of 2.0–3.2 mm, including:

  • • 16–20 AWG silicone wires
  • • servo and power cables
  • • thicker FPV wiring

In the box

  • • 1 m red 4.0 mm heat shrink tubing
  • • 1 m black 4.0 mm heat shrink tubing
Technical data and safety data sheet (SDS) for Salipt Heat-Shrink Tubing

FAQ

Frequently Asked Questions

For insulating wires, protecting solder joints and securing 16–20 AWG cables.

Yes, especially for power wiring and thicker signal lines.

It begins to shrink above 90°C and fully shrinks at 110–120°C.

2:1 — from 4 mm to approx. 2 mm.

Yes, it can be cut freely without affecting performance.

Yes — red indicates positive, black negative.

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