Very Flexible Dual Wall Heat Shrink Tubing
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CYG-DWT
Adhesive Lined Heat Shrink Tube for Automotive
- Outer jacket: Cross-linked modified polyolefin
- Inner wall: Modified hot-melt adhesive
- Shrink ratios: 2:1, 3:1, 4:1
- Very flexible with excellent elasticity, providing multiple shrink ratio options
- Good flame retardancy, meeting UL224 VW-1 high flame retardant rating
Applications
- Our very flexible dual wall heat shrink tubing offers ideal sealing performance and insulation protection for a wide range of electronic components, including cable connections, terminals, and more.
- The tubing is available in various shrink ratios to meet the insulation protection requirements of different shapes and sizes.
Features
- Shrink ratios: 2:1, 3:1, 4:1
- Very flexible with excellent elasticity, providing multiple shrink ratio options
- Good flame retardancy, meeting UL224 VW-1 high flame retardant rating
- Ideal sealing performance
- Inner adhesive layer ensures adhesion to various materials such as plastic, rubber, and metal
- Meets AMS-DTL23053/4 Class 1 and 3 requirements
- Standard color: Black (customizable colors available upon request)
- Compliant with RoHS environmental standards
| Properties | Test Method | Performance | Baseline |
| Temperature rating | - | 135°C | 135°C |
| Longitudinal change | ASTMD2671 | -10%~0 | -4% |
| Tensile strength | ASTMD638 | ≥10.4Mpa | 15.0Mpa |
| Ultimate elongation | ASTMD638 | ≥200% | 390% |
| Heat aging test | - | - | - |
| Tensile strength after aging | ASTMD638 | ≥7.3Mpa | 12.3Mpa |
| Ultimate elongation after aging | ASTMD638 | ≥100% | 260% |
| Voltage withstand | UL224 | 600V | 600V |
| Volume resistivity | ASTMD2671 | ≥1.0×1012 Ω·cm | 4.3×1012 Ω·cm |
| Dielectric strength (2500V/60s) | UL224 | No breakdown | No breakdown |
| Heat shock (250°C/4h, outer layer only) | UL224 | No dripping, no flowing, no cracking | Pass |
| Concentricity | ASTMD2671 | ≥65% | 80% |
Shrink Ratio: 2:1
| Size | As Supplied (mm) | After Recovery (mm) | |||
| Inside Diameter | Wall Thickness | Inside Diameter | Wall Thickness | Adhesive Lining Thickness | |
| Ø1.6 | 1.6 0.3 | 0.30±0.05 | ≤0.8 | 0.55±0.10 | 0.25 |
| Ø2.4 | 2.4 0.4 | 0.30±0.05 | ≤1.2 | 0.55±0.10 | 0.25 |
| Ø3.2 | 3.2 0.4 | 0.30±0.05 | ≤1.6 | 0.60±0.10 | 0.30 |
| Ø4.8 | 4.8 0.5 | 0.35±0.05 | ≤2.4 | 0.70±0.10 | 0.35 |
| Ø6.4 | 6.4 0.5 | 0.40±0.08 | ≤3.2 | 0.75±0.15 | 0.40 |
| Ø9.5 | 9.5 0.5 | 0.40±0.08 | ≤4.8 | 0.80±0.15 | 0.40 |
| Ø12.7 | 12.7 0.3 | 0.45±0.08 | ≤6.4 | 0.85±0.15 | 0.40 |
| Ø19.1 | 19.1 0.4 | 0.50±0.10 | ≤9.5 | 0.95±0.20 | 0.45 |
| Ø25.4 | 25.4 0.5 | 0.55±0.10 | ≤12.7 | 1.10±0.20 | 0.50 |
| Ø38.1 | 38.1 1.0 | 0.60±0.10 | ≤19.0 | 1.25±0.20 | 0.50 |
Shrink Ratio: 3:1
| Size | As Supplied (mm) | After Recovery (mm) | |||
| Inside Diameter | Wall Thickness | Inside Diameter | Wall Thickness | Adhesive Lining Thickness | |
| Ø3.2 | 3.2 0.5 | 0.45±0.05 | ≤1.0 | 1.00±0.20 | 0.50 |
| Ø4.7 | 4.7 0.5 | 0.50±0.05 | ≤1.5 | 1.10±0.25 | 0.50 |
| Ø6.4 | 6.4 0.6 | 0.50±0.08 | ≤2.0 | 1.20±0.25 | 0.50 |
| Ø9.5 | 9.5 0.7 | 0.55±0.08 | ≤3.0 | 1.35±0.25 | 0.60 |
| Ø12.7 | 12.7 0.7 | 0.70±0.10 | ≤4.0 | 1.75±0.30 | 0.80 |
| Ø19.1 | 19.1 0.9 | 0.75±0.10 | ≤6.0 | 2.00±0.40 | 0.80 |
| Ø24.0 | 24.0 0.7 | 0.85±0.12 | ≤8.4 | 2.35±0.30 | 1.00 |
| Ø25.4 | 25.4 1.0 | 0.85±0.12 | ≤8.4 | 2.30±0.45 | 1.05 |
| Ø30.0 | 30.0 1.0 | 0.90±0.15 | ≤10.0 | 2.40±0.45 | 1.05 |
| Ø40.0 | 40.0 1.0 | 0.95±0.15 | ≤13.5 | 2.55±0.45 | 1.05 |
Shrink Ratio: 4:1
| Size | As Supplied (mm) | After Recovery (mm) | |||
| Inside Diameter | Wall Thickness | Inside Diameter | Wall Thickness | Adhesive Lining Thickness | |
| Ø4.0 | 4.0 0.6 | 0.50±0.08 | ≤1.0 | 1.20±0.25 | 0.55 |
| Ø8.0 | 8.0 0.6 | 0.55±0.08 | ≤2.0 | 1.55±0.25 | 0.70 |
| Ø8.0 | 8.0 0.6 | 0.40±0.08 | ≤2.0 | 1.10±0.25 | 0.50 |
| Ø12.0 | 12.0 0.7 | 0.75±0.10 | ≤3.0 | 2.05±0.30 | 0.90 |
| Ø12.0 | 12.0 0.7 | 0.50±0.10 | ≤3.0 | 1.40±0.25 | 0.60 |
| Ø16.0 | 16.0 0.8 | 0.70±0.10 | ≤4.0 | 2.10±0.30 | 1.00 |
| Ø16.0 | 16.0 0.8 | 0.60±0.10 | ≤4.0 | 1.80±0.30 | 0.75 |
| Ø24.0 | 24.0 1.0 | 0.85±0.12 | ≤6.0 | 2.60±0.40 | 1.20 |
| Ø24.0 | 24.0 1.0 | 0.75±0.12 | ≤6.0 | 2.25±0.45 | 0.75 |
| Ø32.0 | 32.0 1.0 | 0.90±0.15 | ≤8.0 | 2.90±0.45 | 1.40 |
| Ø32.0 | 32.0 1.2 | 0.80±0.15 | ≤8.0 | 2.55±0.45 | 1.00 |
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