Flexible tubular heaters

Tubular heating elements are extremely durable, resistant to contamination, and quite economical. They can be used on dies, radiant, thermoforming, and hot runner manifold applications. Tubular heaters provide temperatures up to 649°C and offer tremendous design flexibility. 

Heating equipment. Flexible Nichrome heater wire consisting of a Nichrome inner wire, asbestos and glass insulation, and a flexible stainless steel protective braid, is extremely useful for maintaining systems at temperatures up to 1100°F for periods of time in excess of 10,000 hr [22]. Figure 23-6 shows the application of this type of heater in loop work. Strip and tubular heaters have been in in-pile service for over 8000 hr [34]. A resistance heater has also been used as an internal heater submerged in a lead-bismuth eutectic system [29]. 

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