How do Silicone Rubber Heaters Work?
Silicone rubber heaters are flexible heaters constructed in variable watt densities. They use direct heat transfer coupled with low mass properties to allow for powerful temperature control. Silicone rubber heaters are reinforced with high-strength fiberglass mesh to ensure structural stability. All silicone rubber heaters where both the length and the width dimensions exceed 12” use the wire-wound element design. Heaters may be factory bonded or applied with silicone rubber TRV cement or pressure sensitive adhesive systems. Various mechanical fastenings are also available.
What are the Operating Temperatures of Silicone Rubber Heaters?
Temperature ratings for silicone rubber heaters ranges from -70°F to +450°F. Temperature is determined by the effect of the power density. Below are heater power density recommendations:
|Application Temperature||Recommended Power Density||Notes|
|Gentle warming||2.5 W/in2||—|
|All purpose||5 W/in2||—|
|Rapid warm-up or high-temperature||10 W/in2||The temperature must be controlled or the safe maximum operating temperature limit of 450°F may be exceeded.|
In the majority of applications for silicone rubber heaters, some form of temperature control must be used. In some applications, electromechanical thermostats or other types of temperature control can be used.