Outer jacket tubing is a crucial component of heat shrink straight joint kits, providing the final layer of protection to the cable joint. Its main function is to mechanically protect and seal the joint area from environmental elements such as moisture, dust, chemicals, and physical abrasion, thereby ensuring the long-term reliability and safety of the joint. Heat shrink Outer jacket tubing is made up of X-linked polyolefin.

Purpose and Function

In a heat shrink straight joint, multiple layers of tubing and components are used – each serving a specific function such as insulation, stress control, and dual wall tubing. The outer jacket tubing forms the external covering of the entire joint, encapsulating the inner layers and restoring the mechanical integrity and environmental sealing of the original cable.

 Key Features of Outer Jacket Tubing

• Heat Shrinkable: When heated, the tubing shrinks tightly around the joint and cable, forming a secure and conforming seal.
• Abrasion Resistant: Protects the joint from mechanical damage due to impact, vibration, or movement.
• Weatherproof and UV Resistant: Suitable for both indoor and outdoor use, capable of withstanding sunlight, rain, and varying temperatures.
• Chemical Resistant: Offers protection in industrial environments exposed to oils, acids, and other corrosive substances.
• Waterproof Sealing: Often lined with adhesive or mastic that melts and flows upon heating, sealing out moisture and contaminants.
• Flexible and Durable: Accommodates cable bending and movement without cracking or losing adhesion.