General
Degree of protection	Medium-walled
Shrink rate	4:1
Internal adhesive	thermoplastic
Resistance	resistant to solvents, acids and alkalis
Colour	Black
Material	halogen-free

The shrink tube MA47-12/3-1000-BK from HellermannTyton is a medium-wall heat shrink tube with a shrink ratio of 4:1, specifically designed for use in demanding environments. It serves as a mechanical and chemical protective covering for cables, wires, and plug-cable transitions, particularly in areas with increased mechanical stress, such as in the ground or in industrial installations. The tube is available in rod form with a length of 1 meter and features a thermoplastic inner adhesive that forms a tight, watertight connection after shrinking.

Applications

The shrink tube MA47 is suitable for use in environments with high mechanical stress, for example, during cable installation underground or on the ground. It protects cable connections from environmental influences such as dust, dirt, moisture, and corrosion. The high mechanical strength of the medium-wall material makes it particularly robust against pressure, friction, and tensile loads. Due to its resistance to solvents, acids, and alkalis, it is also suitable for use in chemically demanding environments.

Functions and Features in Detail

The shrink tube has a shrink ratio of 4:1, meaning it reduces to one-quarter of its original outer diameter. This enables a tight fit on cables and connectors, ensuring high clamping pressure and a secure seal. The integrated thermoplastic inner adhesive melts when heated and forms a solid, watertight connection after cooling, providing strain relief and protecting the connection against mechanical stress. The tube is halogen-free, making it suitable for applications in enclosed spaces or where higher safety requirements apply.

Technology Explained Simply

The medium-wall construction of the shrink tube provides excellent mechanical strength, protecting it against cracking and punctures. The 4:1 shrink ratio allows flexible adaptation to various cable diameters, making it suitable for a wide range of applications. Shrinking is achieved by heating, during which the inner adhesive is activated and forms a tight, durable connection. The material composition ensures high resistance to chemical influences, extending the service life of the connection.

Compatibility and Accessories

The shrink tube MA47-12/3-1000-BK is compatible with suitable heating devices such as the gas hot air blower CHG900-PA-GY, which ensures even and controlled heating of the tube. Additionally, a matching shrink tube SMK 12.0-3.0 with adhesive is available, also suitable for use in similar applications. Combining it with appropriate heating devices ensures professional and reliable processing.

Installation and Mounting

Installation involves sliding the shrink tube over the area to be protected, followed by heating with a suitable heating device. It is important to ensure the tube is heated evenly to achieve uniform shrinking and a tight connection. After cooling, the inner adhesive forms a solid, watertight connection that provides strain relief. Processing requires no additional tools or adhesives.

Operational Advantages

The shrink tube MA47 provides a reliable, durable protective covering that extends the service life of cable connections. The high mechanical strength and chemical resistance ensure long-term durability even under harsh conditions. The tight seal protects against moisture, dust, and corrosion, increasing the reliability of the electrical connection. The halogen-free composition makes it suitable for applications in sensitive environments.