Semi‑conductive Tube Cable Joint Screening -40°C to 100°C

WRSBG Heat Shrinkable Semi‑conductive Tube

Heat Shrink Semi‑conductive Tubes are used in cable joints up to 36kV to provide an insulation screen on the build‑up insulation over connectors. Made from thermally stabilised cross‑linked semi‑conductive polymeric material for reliable electrical performance.

Material: cross‑linked polymer

Operating temperature: -40°C to 100°C

Shrink: starts at 110°C, fully at 130°C

Standard color: black

Dimensions & Packaging

Part numbers, as supplied ID, recovered ID, wall thickness, and length range

Part No.	As supplied ID min (mm)	After recovery ID max (mm)	Recovered wall thickness (mm)	Standard length (mm)
WRSBG-45/18	45	18	2.4±0.1	400-1200
WRSBG-50/20	50	20	2.4±0.1	400-1200
WRSBG-55/23	55	23	2.4±0.1	400-1200
WRSBG-65/26	65	26	2.4±0.1	400-1200
WRSBG-100/30	100	30	2.9±0.1	400-1200
WRSBG-120/35	120	35	2.9±0.1	400-1200

*Standard length range: 400‑1200 mm per piece (custom cut available).

Technical Data

Electrical, mechanical and thermal properties

Material Specifications

Property	Test Method	Standard Value
Operating temperature	IEC 216	-40°C to +100°C
Tensile strength (MPa)	ASTM D638	≥14
Elongation at break (%)	ASTM D638	≥300
Tensile strength after aging (MPa)	ASTM D2671 / 120°C,168h	≥11
Elongation after aging (%)	ASTM D2671 / 120°C,168h	≥240
Volume resistance (Ω·cm)	ASTM D2303	1×10² – 1×10³
Longitudinal shrinkage (%)	—	≤15
Eccentricity (%)	ASTM D267	≤30
Water absorption (%)	ISO 62	≤0.1

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Provides reliable insulation screen for medium voltage cable joints up to 36kV.