A new line of heaters is offered as direct replacements for all standard OEM nozzle heaters. They also can be customized for non-standard systems and applications. The new Imperium heaters from Polymer Cleaning Technology, Inc., Hillsborough, N.J., are built of solid brass with a tight-fitting stainless-steel oversleeve. The heater cable is mechanically deformed into the heater grooves. Thermocouples can be integrated into the heater or mounted externally. The design is said to eliminate hot spots and provide dramatically longer heater life and more uniform temperature across the face of the mold.