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Watlow's 430 stainless steel thick film conduction heaters are ideal for use in many applications where fast response and uniformity are essential. A clamp-on thick film heater provides the best possible combination of heat transfer, thermal efficiency and temperature uniformity.

These high performance film heaters use thick film technology to provide maximum temperature response in a low profile package. This film heater technology can be applied in areas where space is at a premium or where conventional heaters cannot be used because of limited voltage and wattage combinations.

Thick film conduction heaters provide a low-profile heater in a variety of shapes. These shapes include two-dimensional circular and rectangular forms. Due to the direct surface contact, a thick film heater ensures efficient heat transfer through thermally stable substrates and precise resistance trace patterns.


Material Maximum Operating Temperatures Maximum Watt Densities
°F °C W/in2 W/cm2
430 stainless steel  1025 550 75 11.6
  • Maximum substrate temperature up to 1025°F (550°C)
  • Watt densities up to 75 W/in² (11.6 W/cm²)
  • Maximum voltage up to 240V


  • Food warming cabinets
  • Load dump resistors
  • Seal bars
  • Deposition chamber lids

Features & Benefits:

Features Benefits
Watt densities up to 75 W/in² (11.6 W/cm²) for clamp-on applications
  • Allows for precise, repeatable wattage distribution and uniform temperature profile
Threaded stud termination
  • Produces strong, trouble-free connections