Dual Wall Tubing in Straight Through Joints

Dual Wall Tubing is a key component in heat shrink straight joint kits for medium and high voltage cables. It is designed to provide electrical insulation and environmental sealing over the cable connection area where conductors are spliced together.

✅ Purpose in Straight Joints:

1. Electrical Insulation:

• Covers the crimped or bolted connectors between the cable conductors.
• Prevents electrical leakage, short circuits, and tracking across phases or to earth.

1. Environmental Sealing:

• The inner adhesive layer melts during heating, creating a watertight seal.
• Protects the joint from moisture, dust, chemicals, and contaminants—critical for underground or outdoor joints.

1. Mechanical Strength:

• Adds a layer of mechanical protection over the joint, shielding it from vibration, bending, and external forces.

1. Stress Control & Void Elimination:

• Adhesive layer flows into small voids around connectors, eliminating air pockets that could cause partial discharge or insulation breakdown over time.