Watlow designed and manufactured the first swaged cartridge heater and revolutionized the heating element industry.
With premium materials and tight manufacturing controls, Watlow’s cartridge heaters (insertion heaters) provide superior heat transfer, uniform temperatures, resistance to oxidation and corrosion and long life even at high temperatures. Customers benefit from Watlow’s custom designs, on-time delivery, quality and technical assistance.
The Watlow FIREROD not only sets the industry standard for cartridge heaters, but continues to make improvements in construction and design. Among those improvements is the FIREROD metric cartridge heater, a variation of the FIREROD cartridge heater built to meet the exact specifications of the global market.
Like its counterpart, the metric FIREROD consistently outperforms other cartridge heaters with its design solutions such as its exclusive resistance wire winding and swaging process. These processes bring the resistance wire closer to the sheath and compacts the MgO insulation to maximize heat transfer. The end result is longer service life and better efficiency.
| Material | Maximum Operating Temperatures | Maximum Watt Densities | ||
|---|---|---|---|---|
| °F | °C | W/in2 | W/cm2 | |
| Alloy 800 | 1400 | 760 | 330 | 50 |
| Features | Benefits |
|---|---|
| Nickel chromium resistance wire |
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| Conductor pins |
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| Magnesium oxide insulation of specific grain and purity |
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| Alloy 800 sheath |
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| Minimal spacing between the element wire and sheath |
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| UL® and CSA approved flexible stranded wires |
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