WATLOW
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Cartridge / Insertion Heaters 

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/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.

Product Material  Maximum Operating Temperatures  Maximum Watt Densities 
°F °C W/in2 W/cm2
FIREROD® Cartridge Incoloy®   1400   760   400   62 
Stainless steel   1000   538   400   62 
1/8-inch FIREROD® Cartridge Heater Alloy 600   1400   760   400   62 
High Temperature FIREROD® Incoloy®   1800   982   100   15.5 
Metric FIREROD Incoloy®   1400   760   330   50 
MULTICELL™ Alloy   2050   1120   30   4.6 
 

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