One of the special characteristics of silicone rubber heaters is that they are highly flexible. With Kawai Corporation’s unique technology, these heaters can be made into a wide variety of shapes.

This heater can be shaped freely as your needs require, including holes and notches. The heating surface is heated appropriately. The minimum size is 3/5 sq. in., with a maximum size of 35.43″ x ∞.

Although there are considerations to take into account such as watt density, this heater can withstand a temperature of 430ºF (220ºC) for 400,000 hours of continuous use.

Feel free to ask us at Kawai Corporation if you have any concerns about installation, thermal uniformity, or any other matters. We’ll be happy to provide our kind assistance. We have the proven technological skill to satisfy your needs in regard to heater size, shape, and temperature distribution.

Since we offer a completely made-to-order system, we can provide all sorts of shapes, from flat to complex 3D shapes, in small lots of one or more. Let us know what you need!


Thermal gradient is required

  • Coarse-to-fine type


  • Molded type


    • With insulator (silicone sponge)


  • Thermocouple built-in type
  • With thermostat
  • With double-sided tape
  • With temperature fuse
  • With resistance temperature detector (RTD)


Thickness 0.043″ to 0.07″ / 1.1 mm to 1.8 mm
Dimensions (mm) 15 x 15 to 900 x ∞
(inch) 3/5 x 3/5 to 35.43 x ∞
Operating Temp.* -94 to 430ºF / -70 to 220ºC
Max. Watt Density* 16 W/in2 / 2.5 W/cm2
Max. Voltage (V) 300
Max. Resistance Density
Wattage Tolerance +/-10%
Outer Dimension Tolerance
Insulation Resistance (MΩ/DC V)** More than 1000/500
High Pot Test (V/min.) / (V/sec.) 1500 / 1800 (5 mA)

* Depending on heater specifications.
** Under no-heat conditions. This might be lowered to around 100 MΩ, depending on operating conditions.

Correlation between Watt Density and Temperature Rising Speed

Contact Us