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Semi-Rigid Dual Wall 4:1 Heat Shrink Tubing

Model: CB- DWT (4000)

Material
Exterior layer: cross-linked modified semi-rigid polyolefin resin
Inner layer: hot-melt adhesive

Shrink ratio: 4:1

Applications
The semi-rigid dual wall 4:1 heat shrink tubing is designed to meet special requirements for automotive wire harness and automotive tubing. The heat shrink tubing is widely used to provide an insulating seal for various automotive wire harnesses, relieve stress at wire junctions or ends, and protect the wires against friction.

Size
Type As supplied After recovery
Min. ID(mm) Max. ID(mm) Adhesive wall (mm) Total wall(mm)
CB- 4000-1 5.72 1.27 0.56 1.2
CB- 4000-2 7.44 1.65 0.76 1.52
CB- 4000-3 10.85 2.41 1.02 1.91
CB- 4000-4 17.78 4.45 1.37 2.41
Specifications
Item Test Method Specifications Test Value
Operation temperature ASTM D 2671 40ºC to 130ºC
Shrink temperature Company standard 110 ºC --135 ºC for jacket
Tensile strength ASTM D 2671 ≥10.3 MPa 18.87 MPa
Longitudinal shrinkage ASTM D 2671 0 to -10 % 5%
Elongation at break ASTM D 2671 ≥250% 330%
Aging at 168h，175℃±2℃ ASTM D 3032 No cracking Pass
Water absorption ASTM D 570 ≤1.0 % 0.5%
Volume resistance ASTM D 2671 ≥1.0 x 1012 (Ω.cm) 9.0 x 1014 (Ω.cm)
Features
  • The CB- DWT (4000) has a higher shrink ratio, allowing it to contain wires with larger diameters.
  • This dual wall heat shrink tubing can be used as wire shielding for automotive wire harnesses.
  • This heat shrink tubing has a thicker hot-melt adhesive layer, which provides a desirable seal against fluids and moisture.
  • This dual wall heat shrink tubing has wide operating temperature range of range of -40℃ to +130℃.
  • The shrinkage of this dual wall tubing starts at 110℃ and completes at 135℃.

Dual Wall Heat Shrink Tubing
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