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Medium Wall Tubing
Product Application:
Medium wall heat shrinkable tubing is designed for electrical insulation and mechanical protection in low and medium voltage cable accessories. It is widely used for the insulation and protection of cable joints and terminations, as well as outer jacket sleeves for in-line and branch joints. The tubing can also be used to repair damaged cable sheaths and provide additional environmental and mechanical protection.
An optional adhesive-lined version offers enhanced sealing performance, making it suitable for applications requiring moisture-proof and corrosion-resistant protection.
Product Features:
Medium wall, cross-linked polyolefin with excellent electrical insulation and mechanical strength
Optional hot-melt adhesive coating for reliable waterproof sealing and corrosion protection
Provides robust resistance to impact, abrasion and environmental stress
Good resistance to UV, weathering, and common industrial chemicals
Suitable for use with most PVC and XLPE insulated power cables
Designed for long-term outdoor and indoor service, typically from -40°C to +105°C
Easy installation with standard heating tools, ensuring a tight and secure fit on the cable jacket
- HuBei
- Information
Product Performance Index
| Item | Test Condition | Requirement | Typical Test Data |
|---|---|---|---|
| Tensile Strength | ASTM D 638 | ≥12 MPa | 13 MPa |
| Elongation at Break | ASTM D 638 | ≥350% | 400% |
| Volume Resistivity | IEC 93 | ≥10¹⁴ Ω·cm | 2 × 10¹⁴ Ω·cm |
| Water Absorption | ISO 62 | < 0.5% | 0.15% |
| Tensile Strength (After Aging) | 158°C, 7 days | ≥10 MPa | 12 MPa |
| Elongation at Break (After Aging) | 158°C, 7 days | ≥300% | 330% |
| Breakdown Strength | IEC 243 | >20 kV/mm | 23 kV/mm |
| Power Frequency Withstand Voltage | 2.5 kV, 60 seconds | No breakdown | Passed |
| Copper Stability Test | 158°C, 7 days | No corrosion | Passed |
| Eccentricity (Wall Thickness Uniformity) | UL 224 | ≤30% | 15% |
| Longitudinal Shrinkage | UL 224 | -3% to +3% | -0.5% |
| Flame Resistance | VW-1 | Pass | Passed |
| Lead (Pb) Content | US EPA 3050B | <1000 ppm | Passed |
| Cadmium (Cd) Content | EN1122, Method B:2001 | <100 ppm | Passed |
| Polybrominated Diphenyl Ethers (PBDEs) | 83/264/EEC | <1000 ppm | Passed |
| Polybrominated Biphenyls (PBBs) | 83/264/EEC | <1000 ppm | Passed |
| Mercury (Hg) Content | EPA 3052:1996 | <1000 ppm | Passed |
| Hexavalent Chromium (Cr⁶⁺) Content | EPA 3060A & EPA 7196A | <1000 ppm | Passed |
Note: All test data are based on standard laboratory testing and represent typical performance values.
Series Specification Sheet
| Size | Inner diameter After Shrink (mm) | Wall Thickness After Shrink (mm) | Packaging Length (M/PCS) |
|---|---|---|---|
| φ8/2 | 2 | 1.7 | 1.22 |
| φ9/3 | 3 | 1.7 | 1.22 |
| φ12/4 | 4 | 2.0 | 1.22 |
| φ16/5 | 5 | 2.2 | 1.22 |
| φ19/5 | 5 | 2.2 | 1.22 |
| φ22/6 | 6 | 2.5 | 1.22 |
| φ28/6 | 6 | 2.5 | 1.22 |
| φ33/8 | 8 | 2.5 | 1.22 |
| φ40/12 | 12 | 2.5 | 1.22 |
| φ45/12 | 12 | 2.5 | 1.22 |
| φ55/16 | 16 | 2.7 | 1.22 |
| φ65/19 | 19 | 2.8 | 1.22 |
| φ75/22 | 22 | 3.0 | 1.22 |
| φ85/25 | 25 | 3.0 | 1.22 |
| φ95/25 | 25 | 3.0 | 1.22 |
| φ115/34 | 34 | 3.0 | 1.22 |
| φ140/42 | 42 | 3.0 | 1.22 |
| φ160/50 | 50 | 3.0 | 1.22 |
| φ180/58 | 58 | 3.0 | 1.22 |
| φ200/60 | 60 | 3.0 | 1.22 |
| φ230/70 | 70 | 3.0 | 1.22 |
| φ260/80 | 80 | 3.0 | 1.22 |
