Steel 1 or 2-Piece Band Heater 900°F Max 1.25" to 7.5" ID

Designed For Trouble-Free Service

The Duraband heater design is the result of many years of research, development and testing for a reliable mica insulated band heater that can perform at the higher operating temperatures [up to 480°C (900°F)] essential to process high temperature resins, providing long, efficient service necessary for today’s high productivity of plastic extruders, injection and blow molding machines.

Duraband is a proven heater design for good life efficiency and dependability. It assures maintaining the lowest winding temperatures possible, keeping a low-mass heating element assembly for fast heat-up and quick thermal response to controls. It incorporates the low thermal expansion built-in strap, a unique design feature.

Advantages and Variations

Duraband mica insulated heaters are widely used on operations involving heating of cylindrical surfaces and are manufactured in a full range of standard construction variations, physical dimensions, electrical ratings, and a complete arrangement of screw terminals and lead terminations. (See pages 13 through 18). However, these standard Duraband heater variations and terminations do not represent the full extent of our capabilities. OMEGA’s engineering staff, with many years of experience in heat processing and temperature control applications, can assist you in designing the right Duraband heater for your specific application.

Standard Specification and Tolerances
Performance Ratings
Maximum Temperature:
    Standard Sheath: 482°C (900°F)
Nominal Watt Density: 3 to 7 Watt/cm² (20 to 45 Watt/in²)
Maximum Watt Density: Dependent on heater size and operating temperature
Electrical Ratings
Maximum Voltage: 480 Vac
Dual Voltage or 3-Phase: Available depending on heater design
Maximum Amperage:
    Lead Wire Termination: 10 Amp
    Screw Terminations: 8-32 UNF—20 Amp 10-32 UNF—25 Amp
Resistance Tolerance: 10%, -5%
Wattage Tolerance: 5%, -10%
Physical Size Construction Limitations
Minimum Width: 19.1 mm (3/4")
Width Tolerance: 1.59 mm (±1/16")
Minimum Inside Diameter: 22.1 mm (7/8")
Nominal Gap: 9.5 mm (3/8")—if a larger gap is required for probes or thermocouples, specify when ordering
Built-In Brackets
Heater Width
    38 to 76 mm (1½ to 3") Number of Brackets 1
    79 to 127 mm (3 1/8 to 5") Number of Brackets 2
    130 to 145 mm (5 1/8 to 67/8") Number of Brackets 3
    178 to 254 mm (7 to 10") Number of Brackets 4
    257 to 381 mm (10 1/8 to 15") Number of Brackets 5
If tighter tolerances are required, contact OMEGA.