Silicone Rubber 

Etched Foil

The manufacturing process begins with a metallic foil that is laminated to a silicone rubber sheet. The sheet is then printed with the desired circuit pattern then chemically etched, leaving the printed pattern. Another layer of silicone rubber is then vulcanized over the top of the circuit.



Wire Wound Elements

One to five strands of resistance wire is wound together then formed in the desired circuit pattern on top of a layer of silicone rubber. Another layer of silicone rubber is placed over the element to seal the heater.

 
 
 Technical Specifications
 Etched Foil 
 Wire Wound
 Size
 Max 22” x 28”
 Max 36” x 70”
 Standard Thickness
 .030”
 .055” for removable  heaters
 Max Watt Density
 60 watts per sq in
 12 watts per sq in
 Max Operating Temp
 450º F
 450º F
 Min Operating Temp
 -70ºF
 -70ºF
 Maximum Voltage
 600 volts
 600 Volts
 Wattage Tolerance
 +5%/- 10% for UL and  CSA Heaters
 +5%/- 10% for UL and  CSA Heaters
 Standard Dimensional  Tolerances
 +/-.063” Tolerances
 0-12” +/-.0625”
 12-24” +/-.1875”
 Over 36” +/-.75”

   

 
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