Hi-Heat is currently quoting a production lead time of 3-5 weeks. Contact us for your custom heating application.
Products
Silicone Rubber Heaters
Flexible and versatile silicone rubber heaters apply heat exactly where it is needed. Custom shapes, sizes, watt densities and configurations make them ideal for curved surfaces, complex geometries and tight spaces.
Performance & Configuration
Specifications & Options
Silicone rubber heaters combine high temperature capability, flexibility and environmental resistance with a wide range of custom configuration options.
Key Specifications
- UL rated with a maximum continuous operating temperature of 200°C (392°F)
- Thermally stable to 232°C (450°F) continuous operation
- Intermittent temperatures up to 316°C (600°F)
- Remains flexible at -57°C (-70°F)
- High dielectric strength of 400 to 600 volts per mil of thickness
- Horizontal burn rated to UL 94 HB
Available Options
- Molded to shape
- Thermostats for part or air sensing
- Thermocouples
- Factory bonding
- PSA pressure-sensitive adhesive backing
- Lead options
- Cords, plugs, connectors and other configurations
Environmental Resistance
- Ozone
- Moisture
- Many chemicals commonly found in the environment
- Vibration
- Mechanical and thermal shock
- Ripping, stretching and separation
Custom Heating Solutions
Silicone Rubber Heater Examples
Flexible heater designs can incorporate thermostats, custom cutouts, specialized shapes and mounting configurations for specific applications.
Heater Applications
Built for a Wide Range of Industries
Custom silicone rubber heaters can be designed for applications ranging from laboratory and medical equipment to transportation, communications and industrial systems.
- Sonic cleaning
- Enclosure heating
- Anti-freezing
- Traffic signal boxes
- Lyophilizers
- Display cases
- Battery heating
- Composite repair
- Lab equipment
- Warming trays
- Food service equipment
- Medical freeze dryers
- Military satellites, targets and hot air balloons
- EV battery heaters
- Medical applications
- Veterinary tables
- Printing equipment
- Telecommunications
- Food processing equipment
Heater Construction
Etched Foil Silicone Rubber Heaters
Our designers use custom software to calculate the configuration of the heating element based on voltage, wattage and resistance. Nickel alloy foil is acid-etched in the resulting pattern and then vulcanized to the silicone rubber sheath material.
The etched element provides superior heat transfer and exceptionally uniform heat output, resulting in a faster warm-up cycle and longer life. These flexible heaters operate in ambient temperatures from -80°F to 500°F.
Advantages Over Wire Wound Heaters
- Distributed wattage
- Complex heat distribution
- Edge loss compensation
- Accurate reproduction of complex circuits
- Greater element area over the heater sheath
Heater Construction
Wire Wound Silicone Rubber Heaters
A fine nickel-chromium alloy wire is spiraled onto a center core of fiberglass twine, producing a strong and flexible heating element. Electronically controlled precision winding equipment helps ensure consistency.
Circuits are then hand-wound on permanent tooling, providing repeatability of resistance and pattern. Parallel circuits are utilized where possible, permitting continued operation should a single circuit be damaged.
After the heating element is positioned, a second layer of silicone rubber is placed over the wire. The layers are then vulcanized to permanently position the circuits.
Advantages Over Etched Foil Elements
- Faster turnaround time on prototype designs
- Lower engineering cost
- More economical pricing at lower quantities
Start Your Project
Request a Quote
Tell us about your application and heater requirements and a member of the Hi-Heat team will follow up with you.