Heat-Shrink Tubing Kit ¨C 2:1 Shrinkable Insulation Tubes for Wire and Electrical Connections

Heat Shrink Tubing Kit — 164 Pieces, 2:1 Ratio, 8 Sizes (1–14mm), Crosslinked PE

A professional-grade heat shrink tubing assortment in crosslinked polyethylene (PE/XLPE) — the same material used in automotive, aerospace, and industrial wiring harnesses. Crosslinked PE outperforms standard PVC heat shrink in every key metric: wider operating temperature range (−55°C to +125°C), higher dielectric strength (15kV/mm), better chemical resistance, and no toxic fumes when heated. The 2:1 shrink ratio provides a tight, conforming fit over wires, connectors, solder joints, and terminals.

Eight sizes from 1mm to 14mm cover everything from fine signal wires (AWG 28) to heavy battery cables (AWG 6), all in four colors for professional color-coded wiring.

Kit Contents (164 Pieces Total)

• 60pcs × 1.0mm ID × 40mm: Yellow, Black, Red, Green
• 32pcs × 2.0mm ID × 40mm: Yellow, Black, Red, Green
• 16pcs × 3.0mm ID × 40mm: Yellow, Black, Red, Green
• 16pcs × 4.0mm ID × 40mm: Yellow, Black, Red, Green
• 16pcs × 6.0mm ID × 40mm: Yellow, Black, Red, Green
• 12pcs × 8.0mm ID × 80mm: Yellow, Black, Red, Green
• 8pcs × 10.0mm ID × 80mm: Yellow, Black, Red, Green
• 8pcs × 14.0mm ID × 80mm: Yellow, Black, Red, Green

Material Specifications

• Material: Crosslinked Polyethylene (PE / XLPE)
• Shrink Ratio: 2:1 (shrinks to 50% of supplied inner diameter)
• Minimum Shrink Temperature: ≥84°C
• Full Shrink Temperature: ≥120°C
• Operating Temperature: −55°C to +125°C
• Dielectric Strength: 15kV/mm
• Tensile Strength: 10.4 MPa
• Flammability: Flame retardant (self-extinguishing)
• Cutting Method: Scissors or sharp knife
• Total Weight: 36g

Wire Size Compatibility Guide

• 1.0mm ID: AWG 28–22 — signal wires, thin hookup wire, JST SH/GH pins
• 2.0mm ID: AWG 22–18 — standard hookup wire, JST PH/XH connector pins
• 3.0mm ID: AWG 18–16 — power wires, automotive wiring, servo leads
• 4.0mm ID: AWG 16–14 — medium power wiring, XT30 connector leads
• 6.0mm ID: AWG 14–12 — heavy power wiring, XT60 connector leads
• 8.0mm ID: AWG 12–10 — high-current motor leads, battery wiring
• 10.0mm ID: AWG 10–8 — heavy gauge cable, EV auxiliary wiring
• 14.0mm ID: AWG 8–6 — very heavy cable, cable bundle insulation, battery pack leads

Crosslinked PE vs. Standard PVC Heat Shrink

• Operating temperature: XLPE −55°C to +125°C vs. PVC −20°C to +105°C
• Chemical resistance: XLPE resists oils, fuels, and solvents; PVC degrades with prolonged exposure
• Fumes when heated: XLPE — none toxic; PVC — releases HCl and plasticizer fumes
• Flexibility at low temperature: XLPE remains flexible at −55°C; PVC becomes brittle below −20°C
• Dielectric strength: XLPE 15kV/mm vs. PVC ~10kV/mm

Application Instructions

• Select tube with supplied ID approximately 20–30% larger than the wire or connector diameter
• Slide tube over wire before making the solder joint or crimp (cannot be applied after)
• Position tube to cover the joint with at least 5mm overlap on each side
• Apply heat evenly with a heat gun at 150–200°C, holding 5–10cm from the tube
• Move heat gun slowly along the tube length for uniform shrinkage
• Allow to cool 30 seconds before handling — tube will be hot immediately after shrinking
• For tight spaces, use a heat gun with a concentrator nozzle for precise heat application

Color Coding Standard

• Red: Positive / live / high voltage
• Black: Negative / ground / return
• Yellow: Warning / caution / signal
• Green: Earth / protective ground / safe

Typical Applications

• Wire splice and solder joint insulation and strain relief
• Connector pin and terminal protection
• PCB component lead insulation
• Automotive wiring harness repair and modification
• LiPo and 18650 battery pack wire insulation
• RC model motor, ESC, and servo lead protection
• Cable bundle color coding and identification
• Antenna coax connector weatherproofing
• Industrial wiring harness assembly

Package Contents

• 164 × crosslinked PE heat shrink tube pieces across 8 sizes and 4 colors (as detailed above)