Single-sided semi-conductive
water-blocking tape.
Single-sided water blocking where a semi-conductive interface is specified.
BLACK SEMI-CONDUCTIVE NONWOVENMaterial construction.
Semi-conductive polyester nonwoven fabric with polyacrylate swelling powder.
Polyacrylate powder absorbs incoming water and swells into a gel, helping close internal water paths after sheath damage. The nonwoven wrap also provides bedding and separation. The semi-conductive carrier is used where the cable design requires a conductive interface.
Absorbs incoming water to limit longitudinal movement.
Useful where a single active face suits the interface.
Specified surface resistance of ≤1500 Ω.
Technical specification.
| Property | Unit | CBDZD-25 | CBDZD-30 | CBDZD-35 | CBDZD-40 | CBDZD-45 | CBDZD-50 |
|---|---|---|---|---|---|---|---|
| Thickness | mm | 0.25 ±0.03 | 0.30 ±0.03 | 0.35 ±0.03 | 0.40 ±0.03 | 0.45 ±0.03 | 0.50 ±0.03 |
| Mass per unit area | g/m² | 90 ±10 | 100 ±10 | 110 ±10 | 130 ±10 | 140 ±10 | 160 ±10 |
| Minimum tensile strength | N/cm | ≥25 | ≥30 | ≥35 | ≥35 | ≥40 | ≥50 |
| Minimum elongation | % | ≥12 | ≥12 | ≥12 | ≥12 | ≥12 | ≥12 |
| Minimum swelling after 1 min | mm | ≥6 | ≥9 | ≥10 | ≥12 | ≥12 | ≥12 |
| Minimum swelling after 3 min | mm | ≥8 | ≥12 | ≥14 | ≥15 | ≥16 | ≥18 |
| Short-term thermal stability | °C | 230 | 230 | 230 | 230 | 230 | 230 |
| Long-term thermal stability | °C | 90 | 90 | 90 | 90 | 90 | 90 |
| Maximum moisture content | % | ≤9 | ≤9 | ≤9 | ≤9 | ≤9 | ≤9 |
| Surface resistance | Ω | ≤1500 | ≤1500 | ≤1500 | ≤1500 | ≤1500 | ≤1500 |
| Volume resistivity | Ω·cm | <1 × 10⁶ | <1 × 10⁶ | <1 × 10⁶ | <1 × 10⁶ | <1 × 10⁶ | <1 × 10⁶ |
Thermal values describe material stability, not a finished-cable temperature rating. Thickness: ISO 9073-2; tensile / elongation: ISO 9073-3; swelling: GB 450; moisture: ISO 287. Electrical properties: GB 3048. Short-term stability: Q/TR.J02.01-2000; long-term stability: IEC 216-1990.
Choosing the right construction.
Choose single-sided tape where one active face suits the cable interface. Check orientation and compare grade build and swelling with double-sided laminate; thickness alone does not determine performance. Use semi-conductive grades only where the electrical design requires them.
Related water-blocking materials.
- CZSD / white double-sided non-conductive
- CBZSD / black double-sided semi-conductive
- CDZD / white single-sided non-conductive
- Water-blocking yarn
Tape wraps broader cable surfaces; yarn targets internal gaps. A combined system can address both.
Specified for your equipment.
Specify grade, slit width, core ID, roll diameter and pad or spool format. Other grades can be stocked to agreed customer demand.
- Winding format
- Pads and spools
To suit the application equipment - Slit widths and dimensions
- To specification
Confirm core ID and maximum roll diameter
Application and processing.
Select overlap, tension and swelling allowance to suit the gap and cable design. Validate the complete cable for pressure, water chemistry and temperature. Salt-water duties need specific qualification.
Store sealed, clean and dry. Product imagery is representative.