Double-sided non-conductive
water-blocking tape.

CZSD-20 master-roll stock for fast slitting and spooling, with smaller MOQs.

Enquire about this material Download datasheet (PDF)

CZSD / NON-CONDUCTIVE White double-sided non-conductive water-blocking tape

WHITE NON-CONDUCTIVE NONWOVEN

0.18–0.50 mmNominal thickness

65–130 g/m²Nominal mass

6–16 mmMin. swelling after 3 min

Non-conductiveElectrical type

THE MATERIAL

Material construction.

polyester nonwoven fabric with polyacrylate swelling powder and corrosion inhibitor.

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. This non-conductive construction is used where a semi-conductive interface is not required.

01Swellable barrier

Absorbs incoming water to limit longitudinal movement.

02Covered laminate

Covering helps retain swelling powder during handling.

03Non-conductive carrier

For layers where semi-conductivity is not required.

MATERIAL PROPERTIES

Technical specification.

Download datasheet (PDF)

Select grade

SELECTED GRADECZSD-20

THICKNESS0.20 ±0.03 mm

MASS PER UNIT AREA70 ±10 g/m²

Enquire about this grade

Double-sided non-conductive water-blocking tape — grade comparison
Property	Unit	CZSD-18	CZSD-20	CZSD-25	CZSD-30	CZSD-35	CZSD-40	CZSD-45	CZSD-50
Thickness	mm	0.18 ±0.03	0.20 ±0.03	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	65 ±10	70 ±10	80 ±10	90 ±10	100 ±10	110 ±10	120 ±10	130 ±10
Minimum tensile strength	N/cm	≥20	≥25	≥35	≥40	≥40	≥45	≥45	≥50
Minimum elongation	%	≥12	≥12	≥12	≥12	≥12	≥12	≥12	≥12
Minimum swelling after 1 min	mm	≥4	≥6	≥8	≥10	≥10	≥11	≥11	≥12
Minimum swelling after 3 min	mm	≥6	≥9	≥12	≥14	≥14	≥15	≥15	≥16
Short-term thermal stability	°C	230	230	230	230	230	230	230	230
Long-term thermal stability	°C	90	90	90	90	90	90	90	90
Maximum moisture content	%	≤6	≤6	≤6	≤6	≤6	≤6	≤6	≤6

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. Mass per unit area: ISO 9073-1. Short-term stability: Q/TR.J02.01; long-term stability: IEC 216.

MATERIAL SELECTION

Choosing the right construction.

Choose double-sided laminate when a covered structure and bedding are priorities. Single-sided grades suit interfaces where one active face is sufficient; compare thickness, swelling and handling. Use a semi-conductive grade where conductive contact is required.

Related water-blocking materials.

Tape wraps broader cable surfaces; yarn targets internal gaps. A combined system can address both.

SUPPLY OPTIONS

CZSD-20 master-roll stock.

CZSD-20 is our most commonly supplied construction. We normally hold master rolls in Manchester for fast slitting and spooling, with smaller MOQs. Other grades can be stocked to support agreed customer requirements.

Download datasheet (PDF)

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.

Double-sided non-conductivewater-blocking tape.