Watlow Etched Foil Element Silicone Rubber Flexible Heaters
Select options for pricing

Not in stock. Call for availability [?]

Need Help? Call a Temperature Engineer 1-800-884-4967

We're open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET


  • Etched foil elements
  • Operating temperature of up to 500°F (260°C)
  • Just 0.018 inch thick
  • 10 watts per square inch
  • Numerous configurations available
  • UR, cUR & VDE recognitions available on many designs

Watlow silicone rubber flexible heaters are rugged yet thin, lightweight, and flexible. With Watlow silicone rubber flexible heaters, you can put the heat where it's needed and, in the process, improve heat transfer, speed warm-ups, and decrease wattage requirements. Fiberglass-reinforced silicone rubber gives your Watlow silicone rubber flexible heater dimensional stability without sacrificing flexibility. Because very little material separates the element from the part, heat transfer is rapid and efficient.

Watlow silicone rubber flexible heaters are available with either wire-wound or etched foil elements. These heaters have an operating temperature of up to 500°F (260°C) and can generate watt densities up to 80 W/in² (12.5 W/cm²) depending upon application temperature. At just 0.018 inch thick, these heaters can be designed to almost any shape and size, including 3-D geometries, to conform to your equipment. The silicone rubber material is moisture and chemical-resistant providing longer heater life and making it easy to bond or attach to your part through the use of vulcanizing, adhesives, or fasteners. UR, cUR, and VDE recognitions are available on many flexible heater designs.

Applications for the Watlow Silicone Rubber Flexible Heaters:

  • Freeze protection and condensation prevention for many types of instrumentation and equipment
  • Medical equipment such as blood analyzers, test tube heaters, etc.
  • Computer peripherals such as laser printers
  • Curing of plastic laminates
  • Photo processing equipment


This product can be used in the following applications: