Dual Wall 3:1 Heat Shrink Tubing
Model: CB-DWT (3x)
Material
Exterior layer: cross-linked modified polyolefin resin
Inner layer: hot-melt adhesive
Shrink ratio: 3:1
Applications
The dual wall 3:1 heat shrink tubing is an adhesive-lined, flexible, flame-retardant and environmentally friendly tubing that features an excellent water resistance and moisture resistance. This heat shrink tubing is widely used as waterproof shrink tubing for wire linkage of electronic devices, as corrosion prevention tubing for metal tubing and as seal tubing for cable branches. The dual wall 3:1 heat shrink tubing can also be used against looseness caused by polymer chain relaxation.
| Size | As supplied (mm) | After Recovery (mm) | |||
| Inside diameter (D) | Total wall (T) | Max. inside diameter (d) | Total wall (t) | Adhesive wall | |
| Ф2.4 | 2.8±0.4 | 0.40±0.15 | 1 | 0.85±0.25 | 0.35±0.10 |
| Ф3.2 | 3.6±0.4 | 0.40±0.15 | 1 | 0.85±0.25 | 0.35±0.10 |
| Ф4.7 | 5.1±0.4 | 0.40±0.15 | 1.5 | 1.05±0.25 | 0.45±0.10 |
| Ф6.4 | 6.9±0.5 | 0.45±0.15 | 2 | 1.10±0.25 | 0.45±0.10 |
| Ф7.9 | 8.4±0.5 | 0.55±0.20 | 2.5 | 1.45±0.25 | 0.45±0.10 |
| Ф9.5 | 9.9±0.5 | 0.60±0.20 | 3 | 1.45±0.25 | 0.45±0.10 |
| Ф10.5 | 11±0.6 | 0.60±0.20 | 3.5 | 1.45±0.25 | 0.45±0.10 |
| Ф12.7 | 13.3±0.6 | 0.60±0.20 | 4 | 1.50±0.35 | 0.45±0.15 |
| Ф15.7 | 16.4±0.7 | 0.65±0.25 | 5 | 1.70±0.40 | 0.45±0.15 |
| Ф19.1 | 19.7±0.7 | 0.75±0.25 | 6 | 2.00±0.45 | 0.65±0.20 |
| Ф25.4 | 25.9±0.7 | 0.75±0.25 | 8.4 | 2.00±0.55 | 0.65±0.20 |
| Ф30.0 | 31.0±1.0 | 0.80±0.30 | 10 | 2.20±0.55 | 0.75±0.20 |
| Ф40.0 | 41.0±1.0 | 0.85±0.35 | 13.7 | 2.50±0.55 | 1.00±0.25 |
| Ф50.0 | 51.0±1.0 | 0.85±0.35 | 16.5 | 2.50±0.55 | 1.00±0.25 |
| Item | Test method | Specifications |
| Radial shrinkage | UL224 | ≥50% |
| Longitudinal shrinkage | UL224 | 0~10% |
| Tensile strength | ASTM D2671 | ≥10.4MPa |
| Elongation at break | ASTM D2671 | ≥200% |
| Aging in circulating-air oven | 158℃±1.0℃/168h | - |
| Tensile strength after aging | ASTM D2671 | ≥7.3MPa |
| Elongation at break after aging | ASTM D2671 | ≥100% |
| Volume resistivity | ASTM D876 | ≥1.0x1014Ω· cm |
| Dielectric voltage | ASTM D2671 | 2500V,60s, no cracking |
| Water absorption | ASTM D570 | ≤1.0% |
- This dual wall heat shrink tubing has minimum shrink temperature of 80℃ and a minimum full recovery temperature of 125℃.
- This heat shrink tube is compliant with UL224 and VW-1 certifications. The approval number is E180908.
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