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Cartridge Heaters

​Proheat cartridge heaters are the highest quality on the market. As the result of many years experience perfecting high watt-density elements capable of long life at elevated temperatures, our cartridge heaters have met the challenge of high heat technology for industrial users across the country with sheath temperatures up to 1800°F.

Common cartridge heater applications include: heating gases and liquids, hot runner molds, hot stamping, laminating presses, medical equipment, semi-conductor, plastic molding, and scientific equipment.
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Hi-Density Cartridge Heaters Our Cartridge heaters are the highest quality available. These heaters are the result of many years experience perfecting high watt-density elements capable of long life at ..... →	Low Density Cartridge Heaters Our Low Density cartridge heaters are designed as an economical, quality heater for lower watt density use (typically 30 watts per square inch, depending on the ..... →
Split Sheath Cartridge Heaters Maximize heat transfer with the unique split-sheath design of the Watt-Flex Cartridge Heater. It allows the independent, bilateral expansion of each half of the heater ..... →	Cartridge Immersion Heaters Hi-Density Cartridge Immersion Heaters are designed for heating water and other liquids. The high watt density capability of this heater permits greater heat dissipation in ..... →
Hot Runner Cartridge Heaters The Hot Runner Cartridge Heater is designed for plastic injection runnerless molding hot tip bushings, pin-point gating torpedoes/probes and manifold bushings.... →	Watlow FIREROD® Cartridge Heaters The FIREROD® cartridge heater revolutionized the heating element industry in 1954 when it was patented as the first swaged cartridge heater ..... →
Watlow High-Temperature FIREROD® Cartridge Heaters The Watlow high-temperature FIREROD® cartridge heater is especially designed for high-temperature platen applications up to 1600°F (871°C) ..... →	Watlow Metric FIREROD® Cartridge Heaters The Watlow FIREROD® not only sets the industry standard for cartridge heaters, but continues to make improvements in construction and design ..... →
Watlow 1/8 Inch FIREROD® Cartridge Heaters The Watlow miniature 1/8-inch FIREROD® cartridge heater provides maximum performance where space is limited ..... →	Watlow MULTICELL™ Insertion Heaters The MULTICELL™ insertion heater provides efficient heat dissipation and long life to meet your highest demands ..... →

Cartridge Heater Resources

Product Showcase: Proheat Cartridge Heaters

If you haven't noticed by now, we at Proheat pride ourselves on the quality and reliability of our products, from the smallest accessory to the highest capacity heater element. This month we want to showcase our most popular heater and its capabilities: the cartridge heater.

Product Showcase: Watlow FIREROD®

In 1954, Watlow's FIREROD® cartridge heater was patented with the ability to provide ​superior heat transfer, uniform temperatures, and resistance to oxidation and corrosion throughout demanding high-temperature applications.

Which Cartridge Heater Should I Use?

Knowing which cartridge heater to use in order to maximize your efficiency can be difficult. Heater life, start up time, process temperatures, durability, size, and cost all play an important role.

Cartridge Heater Cold End

​One of the quickest ways to kill a ​cartridge heater is to have heated section out of the bore and enjoying fresh air. One of two things will happen:

Maximum Allowable Watt Density

The Maximum Watt Density-Heating Metals chart will tell you either the maximum hole fit or the recommended watt density of the heater.