These heaters are manufactured to specification only. Diameters may be specified from 25.4 mm ID and larger in any fractional increments – widths from 37 mm up in 12 mm increments. Since several sizes of ceramic supports are used to accommodate varying heat loads, thickness varies from 11 to 16 mm. Holes for temperature control instruments (or for clearance) can be provided in the body of the heater or provision made at split line connection may be screw type terminals, with or without terminal covers, flexible lead wires with or without armour, or twist lock plug. Unless otherwise specified, screw type terminals are furnished. Any conventional line voltage may be specified, single or multiple circuits.

• The ceramic insulated band heater is particularly recommended where temperature in excess of 800°F in plastic machine assemblies, such as heater cylinders, is required
• Watt density in the order of 7.2 watts/cm² is considered as maximum when used for this purpose.
• A more conventional rating is 6.4 watts per square cm, but any lower density can be furnished to meet the requirements of the application.