Cartridge heaters are cylindrical shaped, rugged heating elements which operate on the principle of Joule heating. Cartridge heaters provide high-precision, uniform heat for demanding industrial and laboratory processes. We wind a resistance-wire element around a magnesium-oxide (MgO) core, then seal it inside a stainless-steel or Incoloy sheath. Simply insert the heater into a matching bore to achieve faster, more consistent heating than alternative methods.
Why Choose Cartridge Heaters?
- High Watt Densities
Reach surface temperatures up to 1400°F (760°C) without degrading performance—ideal for extreme environments. - Rugged Durability
Stainless-steel or Incoloy sheaths withstand mechanical stresses, vibration, and corrosion. - Customizable Designs
Pick your diameter, length, voltage, and wattage to match every application.
Key Features
- Lead-Wire Options
- PTFE, silicone, or fiberglass insulation
- Reinforced strain-relief to prevent bending fatigue
- Built-In Temperature Sensing
- Integrate a thermocouple inside the sheath
- Enable real-time feedback to your PID controller
- Flexible Mounting
- Threaded fittings, flanges, or compression seals
- Secure your heater precisely where you need it
Common Applications
- Process Heating: Extrusion, sealing, laminating, 3D printer hot end control
- Water & Fluid Heating: Injection molds, hot-runner systems
- Platen & Press Heating: Thermoforming, die cutting
- Laboratory Equipment: Drying ovens, analytical instruments
- Mold & Die Heating: Injection molding, blow molding
Installation & Maintenance Tips
- Optimize Fit: Pair with a drilled bore ~0.005″ larger than your heater diameter.
- Inspect Seals: Check lead-wire seals and connections every 3–6 months to prevent moisture ingress.
- Maintain Control: Pair your cartridge heater with a PID controller to avoid temperature spikes and extend heater life.
