General
Degree of protection	Medium-walled
Shrink rate	3:1
Adhesive type	thermoplastic

The heat shrink tube SRH234-7/1000sw from Cellpack is a medium-wall heat shrink tube with integrated thermoplastic adhesive, specifically designed for use in cable installation and connection applications. It is used for sealing and protecting cables against pressure and moisture, particularly in applications such as heat shrink splices and heat shrink end seals. The shrink ratio is 3:1, meaning the tube shrinks to one-third of its original length when heated, creating a tight, form-stable connection. The integrated adhesive activates when heated, providing a uniform, adherent seal that ensures long-term waterproofing.

Applications

The heat shrink tube SRH234-7/1000sw is typically used in electrical and IT installation applications where reliable sealing of cables against moisture and mechanical pressure is required. It is particularly suitable for use in heat shrink splices, where multiple cables or conductors are joined and protected against external influences. It is also appropriate for heat shrink end seals, which are applied to cable ends to create a watertight termination. The product is used in both indoor and outdoor environments where durable, weather-resistant sealing is necessary.

Functions and Features in Detail

The heat shrink tube is constructed with medium wall thickness, providing sufficient wall strength to protect against mechanical stress and environmental influences. The integrated thermoplastic adhesive activates when heated, forming a tight, adherent seal that ensures long-term waterproofing. The 3:1 shrink ratio allows precise adaptation to various cable diameters, achieving optimal fit and sealing. The tube length is 1 meter, sufficient to cover multiple connections or longer cable sections.

Technology Explained Simply

When heated using a hot air gun or another suitable heat source, the tube shrinks to one-third of its original length. During this process, the thermoplastic adhesive is activated, evenly distributing along the inner surface and forming a solid, tight seal once cooled. The medium-wall construction ensures the tube has sufficient strength to withstand mechanical stress without tearing or deforming. The sealing effect is achieved through the combination of shrinkage and adhesive, creating a reliable barrier against moisture and pressure.

Compatibility and Accessories

The heat shrink tube SRH234-7/1000sw is designed for use in heat shrink splices and heat shrink end seals. It can be combined with other components from Cellpack’s range to seal complex cable connections. It is used in conjunction with appropriate heating devices that enable even heating of the tube. No additional specific accessories are required, as the tube itself provides all necessary functions for sealing.

Installation and Mounting

Installation involves sliding the heat shrink tube over the cable or cable connection to be protected. The tube is then evenly heated using a hot air gun or another suitable heat source until it shrinks and the adhesive activates. Heating must be controlled to ensure even shrinkage and a tight seal. After cooling, the connection is sealed and secure. Installation requires no additional tools or materials beyond the heating device.

Operational Advantages

The heat shrink tube SRH234-7/1000sw provides reliable, long-lasting sealing against moisture and pressure. The integrated adhesive layer ensures a uniform, adherent seal that remains effective even under prolonged stress. The 3:1 shrink ratio allows flexible adaptation to various cable diameters, ensuring universal usability. The medium-wall construction provides sufficient strength to withstand mechanical loads. The simple installation using a heating device makes this tube a practical solution for daily use in electrical and IT trades.