Single wall heat shrink tube
The E-FLEX® 2:1 Heat Shrink Tubing is crafted from a specially formulated, cross-linked polyolefin material that balances rugged durability with exceptional flexibility. This heat-responsive tubing is engineered to provide a secure, skin-tight fit over wires and components, offering reliable protection against environmental hazards. Whether used for electrical insulation, wire bundling, or identification, it delivers a clean and professional finish that meets the rigorous demands of home, commercial, industrial, and military environments.

What's Special about Single wall heat shrink tube?
- Durable & Flexible Construction: Made from high-quality cross-linked polyolefin, providing a resilient protective layer that remains flexible even after recovery.
- Efficient Shrink Ratio: Features a standard 2:1 recovery ratio, allowing for quick and consistent installation over various wire diameters and connectors.
- Flame Retardant Safety: Engineered to meet stringent flammability ratings, including VW-1 standards, ensuring superior fire safety in critical electrical setups.
- High Dielectric Strength: Provides excellent electrical insulation and voltage resistance, effectively safeguarding internal connections from shorts and leakage.
- Thermal Stability: Designed to operate reliably across a broad temperature spectrum and withstand significant thermal stress without losing its protective properties.
- Strain Relief & Mechanical Protection: Reinforces wire terminations and joints, reducing the risk of fatigue or damage caused by bending and pulling.
- Environmental Compliance: Fully compliant with global environmental standards, including RoHS and REACH, ensuring a safe and halogen-free solution.
Physical Properties
| Physical Properties | Details |
| Material | Polyolefin |
| Shrink Ratio | 2:1 |
| Working Temperature | -55℃ ~ +125℃ |
| Start Shrink Temperature | 70°C |
| Fully Recovery Temperature | 125°C |
| Longitudinal Shrinkage | ±5% |
|
Aging Resistance |
After aging at 158℃×168h, tensile strength ≥ 7.3 MPa, elongation at break ≥ 100%. |
|
Voltage Withstand (600V) |
2500V, no breakdown within 1 minute. |
| Flammability | VW - 1 |
| Breakdown strength | ≥15KV/mm |
| Standard Color | Black |
|
Cutting Tool |
Scissor |
| Serviceable Tool | Heat gun/tunnel furnace |
Technical Data
| Property | Test Method | Typical Performance |
| Tensile Strength(MPa) | UL224 | ≥10.4 |
| Ultimate elongation(%) | UL224 | ≥200 |
| Heat Shock Resistance | UL224 | No flowing, no cracking, no dripping |
| Cold Bend Resistance | UL224; -30℃×1hr | No cracking |
| Voltage Withstand 300V | UL224 | 1500V, 1min no breakdown |
| Volume resistivity(Ω·cm) | UL224 | ≥1×10¹⁴ |
| Copper Stability | UL224; 158℃×168hr | PASS |
| Corrosion Resistance | UL224; 158℃×168hr | PASS |

Specification
| Part No | Size | Unshrink Size (mm) | After Shrunk Size(mm) | Packing Length (m/spool) | ||
| D | W.T | d | w.t | |||
| HST-ST2-0.5-BK | Φ0.5 | 0.80±0.20 | 0.18±0.05 | ≦0.35 | 0.33±0.10 | 400 |
| HST-ST2-0.6-BK | Φ0.6 | 0.90±0.20 | 0.18±0.05 | ≦0.40 | 0.33±0.10 | 400 |
| HST-ST2-0.8-BK | Φ0.8 | 1.10±0.20 | 0.18±0.05 | ≦0.50 | 0.33±0.10 | 400 |
| HST-ST2-1.0-BK | Φ1.0 | 1.50±0.20 | 0.20±0.05 | ≦0.65 | 0.36±0.10 | 400 |
| HST-ST2-1.5-BK | Φ1.5 | 2.00±0.20 | 0.20±0.05 | ≦0.85 | 0.36±0.10 | 400 |
| HST-ST2-2.0-BK | Φ2.0 | 2.50±0.20 | 0.20±0.05 | ≦1.00 | 0.45±0.10 | 400 |
| HST-ST2-2.5-BK | Φ2.5 | 3.00±0.20 | 0.20±0.05 | ≦1.30 | 0.45±0.10 | 400 |
| HST-ST2-3.0-BK | Φ3.0 | 3.50±0.20 | 0.20±0.05 | ≦1.50 | 0.45±0.10 | 400 |
| HST-ST2-3.5-BK | Φ3.5 | 4.00±0.20 | 0.23±0.05 | ≦1.80 | 0.45±0.10 | 400 |
| HST-ST2-4.0-BK | Φ4.0 | 4.70±0.20 | 0.25±0.05 | ≦2.00 | 0.45±0.10 | 400 |
| HST-ST2-4.5-BK | Φ4.5 | 5.00±0.20 | 0.28±0.05 | ≦2.30 | 0.56±0.10 | 200 |
| HST-ST2-5.0-BK | Φ5.0 | 5.50±0.20 | 0.28±0.05 | ≦2.50 | 0.56±0.10 | 200 |
| HST-ST2-5.5-BK | Φ5.5 | 6.00±0.20 | 0.28±0.05 | ≦2.80 | 0.56±0.10 | 200 |
| HST-ST2-6.0-BK | Φ6.0 | 6.50±0.20 | 0.28±0.05 | ≦3.00 | 0.56±0.10 | 200 |
| HST-ST2-7.0-BK | Φ7.0 | 7.50±0.30 | 0.30±0.05 | ≦3.50 | 0.56±0.10 | 100 |
| HST-ST2-8.0-BK | Φ8.0 | 8.50±0.30 | 0.30±0.08 | ≦4.00 | 0.56±0.10 | 100 |
| HST-ST2-9.0-BK | Φ9.0 | 9.50±0.30 | 0.30±0.08 | ≦4.50 | 0.56±0.10 | 100 |
| HST-ST2-10.0-BK | Φ10.0 | 10.50±0.30 | 0.30±0.08 | ≦4.50 | 0.56±0.10 | 100 |
| HST-ST2-11.0-BK | Φ11.0 | 11.50±0.30 | 0.30±0.08 | ≦5.50 | 0.56±0.10 | 100 |
| HST-ST2-12.0-BK | Φ12.0 | 12.50±0.30 | 0.30±0.08 | ≦6.00 | 0.56±0.10 | 100 |
| HST-ST2-13.0-BK | Φ13.0 | 13.50±0.30 | 0.30±0.08 | ≦6.50 | 0.70±0.10 | 100 |
| HST-ST2-14.0-BK | Φ14.0 | 14.50±0.30 | 0.35±0.10 | ≦7.00 | 0.70±0.10 | 100 |
| HST-ST2-15.0-BK | Φ15.0 | 15.50±0.40 | 0.35±0.10 | ≦7.50 | 0.70±0.10 | 100 |
| HST-ST2-16.0-BK | Φ16.0 | 16.50±0.40 | 0.35±0.10 | ≦8.00 | 0.70±0.10 | 100 |
| HST-ST2-17.0-BK | Φ17.0 | 17.50±0.40 | 0.35±0.10 | ≦8.50 | 0.70±0.10 | 100 |
| HST-ST2-18.0-BK | Φ18.0 | 19.00±0.50 | 0.35±0.10 | ≦9.00 | 0.70±0.10 | 100 |
| HST-ST2-20.0-BK | Φ20.0 | 22.00±0.50 | 0.40±0.10 | ≦10.00 | 0.83±0.10 | 100 |
| HST-ST2-22.0-BK | Φ22.0 | 24.00±0.50 | 0.40±0.12 | ≦11.00 | 0.83±0.10 | 50 |
| HST-ST2-25.0-BK | Φ25.0 | 26.00±0.50 | 0.45±0.12 | ≦12.50 | 0.90±0.15 | 50 |
| HST-ST2-28.0-BK | Φ28.0 | 29.00±0.50 | 0.45±0.12 | ≦14.00 | 0.90±0.15 | 50 |
| HST-ST2-30.0-BK | Φ30.0 | 31.50±1.00 | 0.45±0.12 | ≦15.00 | 0.95±0.15 | 50 |
| HST-ST2-35.0-BK | Φ35.0 | 36.50±1.00 | 0.45±0.12 | ≦18.00 | 0.95±0.15 | 50 |
| HST-ST2-40.0-BK | Φ40.0 | 41.50±1.00 | 0.50±0.12 | ≦20.00 | 0.95±0.15 | 50 |
| HST-ST2-45.0-BK | Φ45.0 | 46.50±1.00 |
0.50±0.15 |
≦23.00 | 1.00±0.15 | 25 |
| HST-ST2-50.0-BK | Φ50.0 | 52.00±2.00 | 0.50±0.15 | ≦25.00 | 1.00±0.15 | 25 |
| HST-ST2-60.0-BK | Φ60.0 | 62.00±3.00 | 0.55±0.20 | ≦30.00 | 1.00±0.15 | 25 |
| HST-ST2-70.0-BK | Φ70.0 | 72.00±3.00 | 0.55±0.20 | ≦35.00 | 1.10±0.20 | 25 |
| HST-ST2-80.0-BK | Φ80.0 | 82.00±3.00 | 0.55±0.20 | ≦40.00 | 1.20±0.20 | 25 |
| HST-ST2-90.0-BK | Φ90.0 | 92.00±3.00 | 0.55±0.20 | ≦45.00 | 1.20±0.20 | 25 |
|
HST-ST2-100.0-BK |
Φ100.0 |
102.00±3.00 |
0.60±0.20 |
≦50.00 |
1.20±0.20 |
25 |
|
HST-ST2-120.0-BK |
Φ120.0 |
122.00±3.00 |
0.65±0.20 |
≦60.00 |
1.30±0.20 |
25 |
|
HST-ST2-150.0-BK |
Φ150.0 |
153.00±4.00 |
0.65±0.20 |
≦75.00 |
1.30±0.20 |
25 |
|
HST-ST2-180.0-BK |
Φ180.0 |
183.00±4.00 |
0.70±0.20 |
≦90.00 |
1.46±0.20 |
25 |
|
HST-ST2-210.0-BK |
Φ210.0 |
215.00±5.00 |
0.70±0.20 |
≦105.00 |
1.46±0.20 |
25 |
|
HST-ST2-230.0-BK |
Φ230.0 |
235.00±5.00 |
0.70±0.20 |
≦115.00 |
1.46±0.20 |
25 |
Application

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