HS4X-B Type Semi-rigid double -wall tube

HS4X-B Type Semi-rigid double wall tube

HSWH-B4X semi-rigid double-wall tube for automotive wire harnesses is composed of polyolefin and hot melt adhesive double layer. The outer layer is semi-rigid polyolefin material with high wear resistance and strength. The inner layer of hot melt adhesive has low melting point, can buffer mechanical strain and has strong sealing property.

Products with high rate shrinkage and wear resistance characteristics, widely used in electronic equipment wire connection, automotive wiring harness, home appliance wiring harness, wire and cable branch, metal pipeline, wire and cable repair, submersible pump wiring and other need to seal occasions.

HSWH-B4X Semi-Rigid Double-Wall Tube for Automotive Wire Harnesses

Overview

The WILLELE HSWH-B4X series is a semi-rigid double-wall tube designed specifically for automotive wire harnesses. Made from polyolefin and featuring a hot melt adhesive layer, it offers excellent wear resistance and strength. The outer layer is semi-rigid, providing mechanical strain buffering and strong sealing properties, making it ideal for various demanding applications.

Features

  • Heat Shrink Ratio: 4:1
  • Initial Shrinkage Temperature: ≥70℃
  • Full Shrinkage Temperature: ≥125℃
  • Operating Temperature: -45℃ to +125℃
  • Environmental Standards: RoHS compliant
  • Standard Color: Black (customizable)
  • Resistance: Water and UV resistant

Applications

Ideal for electronic equipment wiring, automotive wiring harnesses, home appliance wiring, and more. Suitable for cable repair, submersible pump wiring, and other sealing applications.

Technical Indicators

  • Tensile Strength: ≥10.4 MPa (ASTM D 2671)
  • Elongation at Break: ≥200% (ASTM D 2671)
  • Tensile Strength After Aging: ≥7.3 MPa (158℃ × 168h)
  • Elongation at Break After Aging: ≥100%
  • Flame Retardancy: Pass (ASTM D 2671)
  • Water Absorption: ≤0.50% (ASTM D 570)
  • Breakdown Strength: ≥15 kV/mm (IEC 60243)
  • Volume Resistivity: ≥10^14 Ω cm (IEC 60093)

Product Specifications

Specification (Inch)mmSupplied inner diameter (mm)Inner diameter (mm)Total wall thickness (mm)The adhesive layer has a thick wall (mm)Standard packaging (M/root)
2/134.0≥4.0≤0.951.40±0.300.60±0.201.22
1/46.0≥6.0≤1.271.70±0.300.80±0.201.22
5/168.0≥8.0≤1.652.00±0.300.95±0.201.22
2/510.0≥10.0≤2.002.30±0.401.10±0.201.22
1/212.0≥12.0≤2.412.45±0.401.20±0.201.22
3/418.0≥18.0≤4.452.60±0.401.34±0.301.22

Hot Melt Adhesive Specifications

  • Softening Point: 95±5℃ (ASTM E 28)
  • Water Absorption: ≤0.50% (ASTM D 570)
  • Peel Strength (PE): ≥120 N/25mm (ASTM D 1000)
  • Peel Strength (Al): ≥80 N/25mm (ASTM D 1000)

Customer Commitment

WILLELE is committed to providing high-quality products with exceptional customer service. Our HSWH-B4X series is backed by comprehensive technical support and industry certifications, ensuring reliability and customer satisfaction.

Request a OEM Heat Shrink Tubing

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