Watlow has a wide range of heater products that can be configured to address your unique application, including air, cartridge, tubular, flexible, immersion, circulation, fluid delivery, high temperature, strip, nozzle, radiant and specialty heaters. Watlow has experience and expertise to incorporate heating technologies with sensing and control solutions to create a complete thermal system.
Watlow Firerod Cartridge Heaters
Cartridge Insertion Heaters
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.
Watlow Flexible Heater
Flexible Heaters

Flexible heaters from Watlow are thin, bendable and shaped to fit almost any type of equipment. Heat can be applied to the most complex shapes, geometries, curves and pipes conceivable without sacrificing efficiency or dependability.

Excellent heat transfer results from the heater's thin design and direct bonding to an application. Flexible heaters provide fast heat-up and cool-down rates, uniform heat distribution and high watt densities.

Watlow Firerod Immersion Heaters
Immersion Heaters
Watlow's immersion heaters are designed primarily for direct immersion in liquids such as water, oils, solvents and process solutions, molten materials as well as air and gases. By generating all the heat within the liquid or process, these heaters are virtually 100 percent energy efficient. These versatile heaters can also be formed and shaped into various geometries for radiant heating and contact surface heating applications. UL® and CSA component recognized elements are available.
Watlow Thermostat
Several styles of non-adjustable, pre-set thermostats are available from Watlow. Pre-set thermostats used with flexible heaters are available mounted to the heater or as a separate device used to control process.