Circular Heaters

Thermo-Stone’s patented Circular Heater design (#6,242,722) allows for precise temperature distribution on difficult circular applications.Thermo-Stone’s thin film technology allows for a larger heated area, which eliminates hot and cold spots.This feature allows for tighter temperature controls and lower power consumption.

Product Specification Range:

Temperatures up to 500°C
Dimensions - Diameters up to 14" with thicknesses ranging from .0165" to .60"
Voltages - From 3 volts to 300 volts - AC or DC current
Wattage - Up to 1,000 watts/sq in.

Available Substrate:

Aluminum Nitride
Dielectrically coated Stainless Steel
Porous Ceramic

(Link to Substrate comparison chart)

Patent # 6,242,722


Low Mass/High Thermal Conductivity

Energy efficient
Quick heat up/cool down rates
Temperature uniformity

Large Surface Area Coverage – Up to 99%

Lower operating temperatures
Better temperature control
Less hot/cold spots
Quick heat up rates
Superior temperature uniformity
Energy efficient

High Watt Density

Quicker heat up rates
Higher temperatures


Over 90% visible light transparency
See through heaters
No out gassing
Can be used in clean room environments

Multiple Segment Design

Customizable heat distribution
Better temperature control and uniformity


Medical - CPAP and Vapor Systems, Diagnostic Equipment, Blood Analysis, Drug Delivery
Industrial - Chemical detection, Mass-Spectrometers
Appliance/Electronics - Coffee Makers, Vaporizers, Hot Plates, Cook Tops
Semi-Conductor - Wafer Chuck, Chemical Processing, Chip/Burn-in Systems
Military/Aerospace - Chemical Detection