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Silicone Rubber Heaters

Silicone Rubber Heaters are available as wire wound or etched foil. Wire wound elements consist of the resistance wire wound on a fiberglass cord for support and stability. Etched foil heaters are made with a thin metal foil (.001”) as the resistance element. Wire wound is recommended and preferred for small to medium size quantities, medium to large sized heaters, and to produce prototypes to prove out the design parameters prior to entering into large volume production runs with etched foil.

Silicone Rubber Heater – Wire Wound & Etched Foil Type

SPECIFICATIONS AND TOLERANCES

Performance Ratings
Maximum Operating Temperature: 500°F / 260°C Intermittent
392°F / 200°C Continuous
Minimum Operating Temperature: -70°F / -56.6°C
Physically Resistant To: Moisture
Ozone
Fungus
Radiation
Agency Approvals: UL File #E65652 (wire-wound only)

Electrical Ratings:
Resistance Tolerance: Wire: +10%, -5%
Foil: +10%, -10%
Maximum Operating Voltage: Wire: 600 VAC
Foil: 480 VAC
Dielectric Strength 1000 VAC
Standard Leads: 10" Teflon® Insulated Stranded Wire
Maximum Resistance Density for Heaters with Etched Foil Element: 125 Ω/in2
Construction Types
Physical Size and Construction Limitations

Wire Wound Element:

  • Consists of resistance wire wound on a fiberglass cord for added support and flexibility
  • Element can be laid out in a special designed pattern to fit application requirements such as:
    • ensure uniform heat profile or to concentrate the heat profile in a specific section(s) of the heater
    • conform to the size and shape of the silicone rubber heater
    • avoid holes and cutouts
  • Power lead wires or cord sets are attached to the heater windings with solder and firmly secured in place through a vulcanizing process, ensuring that the assembly becomes homogenous
  • Recommended/preferred for small to medium size quantities, medium to large size heaters, and to produce prototypes to prove out the design parameters prior to entering into large volume production runs when using etched foil
  • Provide excellent physical strength capable of withstanding repeated flexing without compromising the life and performance of the heater
  • Very effective for manufacturing geometrically challenged shapes, including three dimensional ones

Maximum Size:

  • Wire: 36" × 144" (91.4 × 366 cm)
  • Foil: 10" × 22" (25.4 × 56.9 cm)

Dimensional Tolerance:

  • Less than 6": ±0.030" (0.76 mm)
  • 6" to 12": ±0.060" (1.52 mm)
  • 12" to 18": ±0.125" (3.17 mm)
  • 18" to 36": ±0.250" (6.35 mm)
  • 36" to 72": ±0.500" (12.7 mm)
  • Every 36" after 72": Additional ±0.250" (6.35 mm)

Nominal Thickness:

  • Wire: 0.056" (1.42 mm)
  • Foil: 0.030" (0.76 mm)

Available Thickness: 0.018" to 0.112" (0.46 mm to 2.85 mm)

Weight: 7 oz./ft2 (0.21g/cm2)