Application
Wrapta-T6 high-shrink-ratio thick-wall adhesive-lined heat shrink tubing features an exceptional 6:1shrink ratio, making it ideal for insulation and waterproof protection of cables, connectors, and components with large diameter variations or irregular shapes. Its robust wall and internal hot-melt adhesive form a tight, reliable seal upon shrinking. Widely used for waterproofing outlet holes of fiber optic splice closures and optical fibers, Wrapta-T6 delivers outstanding mechanical strength and long-lasting protection—perfect for critical applications in demanding environments.
Features and Benefits
• Shrink ratio 6:1
• Thick-wall design for large diameter variations or irregular shapes
• Excellent mechanical strength, abrasion, and UV resistant, reliable protection
• Inner hot-melt adhesive for tight, waterproof sealing
• Widely used in fiber optic splice closures and critical points
| Property | Requirement | Test Method | Typical Data |
| Operating temperature | / | / | -55℃ to +110℃ |
| Min. shrink temperature | / | / | +80℃ |
| Full recovery temperature | / | / | +120 ℃ |
| Tensile strength | ≥10.3MPa | ASTM D 2671 | ≥12MPa |
| Tensile strength after aging | ≥10.3MPa | ASTM D 2671 (150℃/168 hrs) | ≥12MPa |
| Elongation at break | ≥200% | ASTM D 2671 | ≥350% |
| Elongation at break after aging | ≥100% | ASTM D 2671 (150℃/168 hrs) | ≥300% |
| Dielectric strength | ≥10kV/mm | ASTM D 2671 | ≥10kV/mm |
| Volume resistivity | ≥1012Ω·cm | ASTM D 2671 | ≥1012Ω·cm |
| Heat shock | No Cracking | ASTM D 2671 (225℃/4 hrs) | No Cracking |
| Hot melt adhesive | |||
| Softening point | 85±5℃ | ASTM E28 | 85±5℃ |
| Water absorption | ≤0.2% | ISO 62 | ≤0.2% |
| Peel strength | ≥4N/cm | DIN 30672 | ≥4N/cm |
Product Dimension

| Table A. Product Dimensions (Thick-Wall) | |||||
| Shrink Ratio | Part No. | Size (Φ mm) | As supplied (mm) | After recovered (mm) | Standard length (m) |
| I.D. min (D) | I.D. max (d) | ||||
| 3:1 | Wrapta-T-19 | 19 | 19 | 3.2 | 1.22 |
| Wrapta-T-33 | 33 | 33 | 5.5 | 1.22 | |
| Wrapta-T-45 | 45 | 45 | 7.4 | 1.22 | |
| Wrapta-T-51 | 51 | 51 | 8.3 | 1.22 | |
| Wrapta-T-70 | 70 | 70 | 11.7 | 1.22 | |
| Wrapta-T-89 | 89 | 89 | 17.1 | 1.22 | |
| Wrapta-T-120 | 120 | 120 | 22.9 | 1.22 | |
| Wrapta-T-235 | 235 | 235 | 40 | 1.22 | |
Custom sizes and colors are available upon request. Technical specifications are subject to change without prior notice. Minimum order quantities (MOQ) may differ from standard packaging quantities.