Dual Wall Heat Shrink Tube is specifically designed to enhance electrical insulation, mechanical protection, and environmental sealing for cable joints, terminations, and splices.
The polyolefin exterior provides high mechanical strength, resistance to UV radiation, and protection against mechanical stress, while the inner adhesive lining melts upon heating, ensuring airtight and watertight sealing that protects against moisture ingress, dirt, corrosion, and electrical failures.
This tubing is ideal for power distribution networks, switchgear, transformers, substations, underground cable joints, and heavy-duty industrial applications. It is built to withstand high voltage stress while maintaining dielectric strength and superior insulation performance.
| Property | Test method | Standard Value |
|---|---|---|
| Tensile Strength | ASTM-D-638 | ≥10MPa |
| Elongation at Break | ASTM-D-638 | ≥350% |
| Tensile Strength Variation After Heat Aging（130℃x168h） | ASTM-D-5510 | ≤±20% |
| Elongation at Break Variation After Heat Aging（130℃x168h） | ASTM-D-5510 | ≤±20% |
| Volume Resistivity | IEC 60093 | ≥1×1014Ω.cm |
| Dielectric Strength | IEC 60243 | ≥20kV/mm |
| Dielectric Constant | IEC 60250 | ≤4 |
| Brittle Temperature | ISO 974 | -40℃ |
| Hardness（Shore A） | ISO 868 | ≥80 |
| Heat Shock | 160℃，4h | No Crack |
| Longitudinal Shrinkage | ASTM-D-2671 | ≤10% |
| Eccentricity | ASTM-D-2671 | ≤30% |
| Property | Test method | Standard Value |
|---|---|---|
| Tensile Strength | ASTM-D-638 | ≥10MPa |
| Elongation at Break | ASTM-D-638 | ≥350% |
| Tensile Strength Variation After Heat Aging（130℃x168h） | ASTM-D-5510 | ≤±20% |
| Elongation at Break Variation After Heat Aging（130℃x168h） | ASTM-D-5510 | ≤±20% |
| Volume Resistivity | IEC 60093 | ≥1×1014Ω.cm |
| Brittle Temperature | ISO 974 | -40℃ |
| Hardness（Shore A） | ISO 868 | ≥80 |
| Heat Shock | 160℃，4h | No Crack |
| Longitudinal Shrinkage | ASTM-D-2671 | ≤10% |
| Eccentricity | ASTM-D-2671 | ≤30% |
| Spec. | As Supplied/mm | After Recovered/mm | Standard Length/mm | ||
|---|---|---|---|---|---|
| Inner Diameter Min | Wall Thickness (±20%) | Inner Diameter Max | Wall Thickness (±10%) | ||
| WDWT-30/12 | 30 | 2.8 | 12 | 5.8 | 300-1000 |
| WDWT-35/13 | 35 | 2.5 | 13 | 5.8 | 300-1000 |
| WDWT-45/17 | 45 | 2.3 | 17 | 5.8 | 300-1000 |
| WDWT-55/21 | 55 | 2.2 | 21 | 5.8 | 300-1000 |
| WDWT-65/26 | 65 | 2.3 | 26 | 5.8 | 300-1000 |
| WDWT-85/30 | 85 | 2.7 | 30 | 7.2 | 300-1000 |
| WDWT-100/38 | 100 | 2.9 | 38 | 7.2 | 300-1000 |
| WDWT-120/45 | 120 | 2.9 | 45 | 7.2 | 300-1000 |
The Dual Wall Heat Shrink Tube features an inner red insulation material and an outer black semi-conductive layer, providing enhanced electrical protection and reliable stress control.
AXIS House, Plot# 149-BCD,
Kandivali Co-Op Industrial Est. Ltd., Kandivali (W), Mumbai – 400067,
India.
© Copyright Reserved by Axis Electrical Components (India) Pvt. Ltd.
