General
Colour	Red

The Pliofine B-EX-03 3900 heat shrink tube from Ses-Sterling is a protective material specifically developed for use in electrical and electronic installations. It is supplied in the form of a reel with a length of 30 metres and is characterised by its red colour, making it suitable for marking cables or for use in specific application areas. The tube provides mechanical and electrical insulation for cables, wiring, and electrical connections, forming a tight, shape-stable covering when shrunk by heating.

Heat shrink tube
The B-EX-03 3900 heat shrink tube is a thermoplastic shrink tube that, when heated to approximately 100 °C to 120 °C, maintains its original length but shrinks in cross-section to about one-third of its initial diameter. This 3:1 shrink ratio allows the tube to be used for a wide range of cable diameters, fitting tightly around the cable to form a dense, protective sheath. The shrink technology ensures that the tube provides a shape-stable, durable covering after heating, protecting against mechanical stress, moisture, and environmental influences.

Applications
The heat shrink tube is intended for use in electrical installations, automation technology, and industrial and machine-building applications. It is particularly suitable for insulating cables used in harsh environments or under mechanical stress. The red colour can be used for marking cables, for example, for control wiring, emergency stop circuits, or other specific functions that should be identifiable by colour coding. The tube can be used in indoor and outdoor installations, with specific environmental conditions such as temperature, humidity, and mechanical stress influencing the selection of the tube.

Functions and features in detail
The B-EX-03 3900 heat shrink tube offers high mechanical strength and is resistant to moisture, oil, and other chemical influences. The red colour is durable and does not fade under normal operating conditions. The 3:1 shrink ratio enables flexible adaptation to various cable diameters, making the tube universally applicable. The product is packaged on a reel with a total length of 30 metres, enabling efficient handling and storage. The packaging weight is 2.342 kg, with a weight per metre of 78.06 g.

Technology explained simply
The heat shrink tube is made of a thermoplastic material that changes shape when heated. Heating is typically done using a hot air blower or a dedicated shrink tool. When the shrink temperature is reached, the tube contracts in cross-section, fitting tightly around the underlying cable. This creates a dense, shape-stable covering that protects the cable from external influences. The 3:1 shrink ratio means that a tube with an initial diameter of, for example, 12 mm will reach a diameter of approximately 4 mm after shrinking. This allows the tube to be used for a wide range of cable diameters.

Compatibility and accessories
The B-EX-03 3900 heat shrink tube is compatible with a wide range of cables and wires used in electrical and automation technology. It can be combined with other heat shrink tubes, cable ties, insulating tape, or other protective materials to create a comprehensive protection solution. The use of a hot air blower or a dedicated shrink tool is required to activate the tube correctly.

Installation and mounting
Installation is carried out by sliding the tube over the cable or connection to be protected. The tube is then heated using a hot air blower or a shrink tool until it contracts and forms a tight sheath. Heating should be applied evenly to ensure uniform shrinkage. After cooling, the tube becomes shape-stable and provides a durable protective layer. Installation requires no additional tools or materials beyond the heating device.

Operational advantages
The B-EX-03 3900 heat shrink tube provides reliable, durable insulation that protects against mechanical stress, moisture, and chemical influences. The red colour allows for easy identification of cables, simplifying maintenance and servicing. The 3:1 shrink ratio ensures flexible adaptation to various cable diameters, making the tube universally applicable. Packaging on a reel with a length of 30 metres enables efficient storage and handling. High mechanical strength and resistance to environmental influences ensure a long service life of the tube in operation.