Thermotube tubular heaters are rustproof and when sealed are more resistant to damp.

By applying a silicone sealing compound around the sealing shoulder of the terminal cover, the rivets and the sealing edge of the end cap allows the use of thermotubes in certain horticultural applications such as greenhouses and garden frames along with use in many industrial applications.

Thermotubes are not suitable for soil heating, if covered with soil they may overheat and eventually corrode.

Thermotubes are particularly easy to install either singly or in banks, although it is essential to observe a few precautions when installing for use under severe conditions.

To maintain economy of operation thermostatic or timed control is essential and is often desirable in other applications.