Heat-shrink tubing 3:1 Ø7.4mm Red (1m)

Heatshrink tube 3:1 Ø6.4mm Length 1m Red
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Reference : 3709
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Shipping date: 28-05-2024.

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2 Years warranty
More info

Thermo-retractable sheath with a ratio of 3: 1, internally equipped with an adhesive layer ensuring better support on any type of surface (plastic, rubber, metal ...)

Thickness of intermediate size studied to provide excellent protection to mechanical strength, while maintaining a high degree of flexibility.

Adapts to irregular shapes and provides a high degree of insulation and waterproofing. Product is halogen-free, flame retardant, and RoHS certified.

A ratio of 3: 1 means that the diameter of the sheath once heated will be divided by 3: for example for a 12mm sheath, after being heated its diameter will be 4mm.

Diameter: 7.4mm => about 2.4mm after retraction



  • Retractable Ratio: 3: 1
  • Longitudinal Retracting Ratio: ± 8%
  • Shrink Temperature: 70 - 120 ° C
  • Melting Temperature of Internal Adhesive Layer: 70 - 90 ° C
  • Sheath Thickness Retractable: +/- 0.50mm
  • Sheath Thickness After Shrinkage: +/- 1.20mm
  • Temperature Resistance: -45 to + 125 ° C
  • Rigidity Dielectric: ≥15 Kv / mm (IEC243)
  • Certifications: RoHS
  • Diameter: 7.4mm
  • Length: 1m
  • Color Red
Data sheet
Length (m)Sold by length
Max cable diameter (mm)7.4

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Average votes
5.0 / 5
1 reviews
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Good fit
I have used a combination of the 4 below mentioned items (all from Audiophonics) to make a small 1,5m speakercable to link Kef eggs and class-d amplifier coupled to PS4. Materials were all easy to handle and of good quality. Happy with the result.
- Heat-shrink tubing 3:1 Ø7.4mm Red (1m)
- Heat-shrink tubing 3:1 Ø7.9mm Black (1m)
- JANTZEN AUDIO SUPRA 5N Speaker Cable OFC PVC 2x2.5mm²
- YARBO SC02 Banana Plug Gold Plated 24k Ø3.5mm (Set x8)
This review has been posted for Heat-shrink tubing 3:1 Ø7.4mm Red (1m)

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