Medium Wall Heat Shrink Tubing

Adhesive-lined thick-wall tubing for cable jacket repair and direct burial. Model DWT.

Models DWT
Standards UL 224, IEC 60684, RoHS
Contact our engineers.
Medium Wall Heat Shrink Tubing

Product Overview

DWT medium wall tubing combines a semi-flexible crosslinked polyolefin outer layer (1.7–3.0 mm recovered wall) with a hot-melt adhesive lining. Designed for cable jacket repair, underground joint sealing and mechanical protection.

Performance Data

PropertyTest MethodRequirementTypical
Tensile strengthASTM D638≥10.4 MPa13 MPa
Elongation at breakASTM D638≥300%350%
Dielectric strengthIEC 243>20 kV/mm23 kV/mm
Power frequency withstand—2.5 kV, 60 sPass
Wall biasUL 224≤30%13%
Longitudinal change—±5%+3%

Internal test data. Questions on parameters? Contact our engineers.

Size Specifications

SizeRecovered ID (mm)Wall (mm)Piece Length (m)
Φ8/221.701.22
Φ12/442.001.22
Φ22/662.501.22
Φ40/12122.501.22
Φ65/19192.801.22
Φ95/25253.001.22
Φ160/50503.001.22
Φ260/80803.001.22

Standard color: black. Custom colors available — contact our sales team.

Applications

Cable Jacket Repair

Repair damaged cable jackets without replacement. Clean, size, center over the damage and heat from the middle outward.

Joint Protection

Mechanical barrier over splice kits in underground joints. The adhesive lining keeps moisture out of the splice.

Anti-Corrosion Sealing

Seal pipe joints against soil corrosion. Also protects underwater connections such as subsea lighting.

Standards

FAQ

DWT vs SRS dual wall?
DWT is medium wall (1.7–3.0 mm) for mechanical protection. SRS is thin wall (0.5–1.0 mm) for connector sealing.
Can DWT be direct-buried?
Yes. Thick wall and adhesive seal rated for direct burial.
Minimum bending radius?
Typically 5× recovered OD. -55°C cold bend passes.
How to repair cable jacket?
Clean, select size, center over damage, heat from center outward.

Still deciding? Contact our engineers.

Tell us your cable size, voltage and environment. We reply within one business day.

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