This is Thermal’s portal to our standard mica band heater designs. Each of the page links below have sketches of various heater bands to aid you in choosing the heater best suited for your application.
Thermal Corporation’s heater bands are made to heat cylinders, such as pipes, barrels, or nozzles of injection molding and extruding machines. Mica heater bands are constructed by winding a resistance wire or ribbon around a sheet of mica, sandwiching that element between two other sheets of mica, and then forming coated steel around the assembly.
Mica-type band heaters have several advantages over other types of heater bands, but the thing that makes them the most used heater in the plastics industry is the combination of reasonable high-watt density capabilities, reasonably high temperature capabilities (900 degrees Fahrenheit), good efficiency, good lifetime and low cost.
Ready to Order? Request a quote by filling out the online form and selecting Mica Band Heater from the drop-down or give us call at (800) 633-2962.
All Mica Band Heater Configurations
Configuration & Description
Configuration Diagram
Configuration 500 Lead Wires with Straps
One-piece, flexible leads with stainless steel overbraid and separate strap.
Diameters from 1" to 14"
Widths from 1" to 10"
Configuration 501 Lead Wires with Straps
Two-piece, flexible leads with stainless steel overbraid and separate strap. When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 2" to 28"
Widths from 1" to 10"
Configuration 502 Post Terminals with Straps
One-piece, post terminals located on each end and separate strap.
Diameters from 11/2" to 15"
Widths from 1" to 5"
For widths 5" to 10", specify Configuration 532.
Configuration 503 Post Terminals with Straps
Two-piece, post terminals on each end of each half, separate strap. When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 3" to 30"
Widths from 1" to 5"
For widths 5" to 10", specify Configuration 533.
Configuration 506 Post Terminals with Straps
One-piece, post terminals located side by side on one end, separate strap.
Diameters from 3" to 14"
Widths from 21/2" to 10"
Configuration 507 Post Terminals with Straps
Two-piece, post terminals located side by side on one end of each half, separate straps. When specifying wattage and voltage, give wattage and voltage of each individual half.
Diameters from 4" to 28"
Widths from 21/2" to 10"
Configuration 510 Post Terminals with Flanges
One-piece, post terminals located one on each end, clamping tabs (no straps).
Diameters from 2" to 14"
Widths from 1" to 10"
Configuration 511 Post Terminals with Flanges
Two-piece, post terminals located on each end of each half, clamping tabs (no straps). When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 3" to 28"
Widths from 1" to 10"
Configuration 512 Post Terminals with Flanges
One-piece, post terminals located side by side on one end, clamping tabs (no straps).
Diameters from 21/2" to 14"
Widths from 21/2" to 10"
Configuration 513 Post Terminals with Flanges
Two-piece, post terminals located side by side on one end of each half, clamping tabs (no straps). When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 3" to 28"
Widths from 21/2" to 10"
Configuration 514 Lead Wires with Straps
One-piece, flexible leads with stainless steel hose and separate strap.
Diameters from 11/2" to 15"
Widths from 1" to 5"
For widths 5" to 10", specify Configuration 544.
Configuration 515 Lead Wires with Straps
Two-piece, flexible leads with stainless steel hose and separate strap. When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 3" to 30"
Widths from 1" to 5"
For widths 5" to 9", specify Configuration 545.
Configuration 516 Lead Wires with Straps
One-piece, flexible leads with stainless steel overbraid and separate strap.
Diameters from 11/2" to 15"
Widths from 1" to 5"
For widths 5" to 10", specify Configuration 546.
Configuration 517 Lead Wires with Straps
Two-piece, flexible leads with stainless steel overbraid located at one end of each half, and separate strap. When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 3" to 30"
Widths from 1" to 5"
For widths 5" to 10", specify Configuration 547.
Configuration 518 Lead Wires with Flanges
One-piece, flexible leads with stainless steel overbraid, clamping tabs (no straps).
Diameters from 2" to 14"
Widths from 1" to 10"
Configuration 519 Lead Wires with Flanges
Two-piece, flexible leads with stainless steel overbraid, clamping tabs (no straps). When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 3" to 28"
Widths from 1" to 10"
Configuration 520 Lead Wires with Flanges
One-piece, flexible leads with stainless steel hose, clamping tabs (no straps).
Diameters from 2" to 14"
Widths from 1" to 10"
Configuration 521 Lead Wires with Flanges
Two-piece, flexible leads with stainless steel hose, clamping tabs (no straps). When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 3" to 28"
Widths from 1" to 10"
Configuration 528 Post Terminals with Straps
One-piece, post terminals located two-in-line at one end and separate strap.
Diameters from 3" to 15"
Widths from 1" to 5"
Configuration 529 Post Terminals with Straps
Two-piece, post terminals located two-in-line at one end of each half, separate strap. When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 3" to 30"
Widths from 1" to 5"
Configuration 532 Post Terminals with Straps
One-piece, post terminals located one on each end and separate straps.
Same as Configuration 502 except with folded ends.
Diameters from 3" to 14"
Widths from 1" to 10"
Configuration 533 Post Terminals with Straps
Two-piece, post terminals located one on each end and separate straps. When specifying wattage and voltage, give wattage and voltage for each individual half.
Same as Configuration 503 except with folded ends.
Diameters from 5" to 28"
Widths from 2" to 10"
Configuration 534 Post Terminals with Straps
One-piece expandable (made as a one-piece heater, but notched and designed to be bent open to fit over a cylinder, then closed), post terminals located on each end, separate strap.
Diameters from 3" to 15"
Widths from 1" to 5"
Configuration 536 Lead Wires with Straps
One-piece expandable (made as a one-piece heater, but notched and designed to be bend open to fit over a cylinder, then closed), flexible leads with stainless steel overbraid located on one end, separate strap.
Diameters from 21/2" to 15"
Widths from 1" to 5"
Configuration 538 Lead Wires with Straps
One-piece expandable (made as a one-piece heater, but notched and designed to be bent open to fit over a cylinder, then closed), flexible leads with stainless steel hose located on one end, separate strap.
Diameters from 21/2" to 15"
Widths from 1" to 5"
Configuration 540 Lead Wires with Straps
Thin one-piece, flexible leads with stainless steel hose located on one end, separate strap.
Diameters from 2" to 10"
Widths from 3/4" to 1"
Configuration 542 Lead Wires with Straps
Thin one-piece, flexible leads with stainless steel overbraid located on one end, separate strap.
Diameters from 2" to 10"
Widths from 3/4" to 1"
Configuration 544 Lead Wires with Straps
One-piece, flexible leads with stainless steel hose and separate straps.
Same as Configuration 514 except with folded ends.
Diameters from 3" to 14"
Widths from 2" to 14-1/2"
Configuration 545 Lead Wires with Straps
Two-piece, flexible leads with stainless steel hose and separate strap. When specifying wattage and voltage, give wattage and voltage for each individual half.
Same as Configuration 515 except with folded ends.
Diameters from 4" to 28"
Widths from 2" to 14-1/2"
Configuration 546 Lead Wires with Straps
One-piece, flexible leads with stainless steel overbraid and separate strap.
Same as Configuration 516 except with folded ends.
Diameters from 3" to 14"
Widths from 2" to 14-1/2"
Configuration 547 Lead Wires with Straps
Two-piece, flexible leads with stainless steel overbraid located at one end of each half, folded ends, and separate strap. When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 4" to 28"
Widths from 2" to 14-1/2"
Configuration 550 Lead Wires with Straps
One-piece, flexible leads (no metal overbraid) and separate strap.
Diameters from 1" to 14"
Widths from 5/8" to 10"
Configuration 551 Lead Wires with Straps
Two-piece, flexible leads (no metal overbraid) and separate strap. When specifying wattage and voltage, give wattage and voltage for each individual half.
Diameters from 2" to 28"
Widths from 5/8" to 10"
*Discounts may apply. Call for Discounts Based on Order Quantity.
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Band Heaters – Flanges vs. Straps
Clamping straps provide the best closure method to enhance mica band heater life because the band heater is forced into more intimate contact with the part requiring heat, lowering the external and internal heating temperatures.
Flanged mica heater bands, while not providing as good a contact with the barrel, may be much easier to install in some applications.
Check to see how close your heater bands are to the maximum watt density. The closer to the curve, the more you need the benefits of the strapped band. The further away from the curve, the more likely a flanged heater would be acceptable.
Written by Jennifer Taylor & Shelby Reece Date Published: 01.17.2014 Last Updated: 03.11.2020
