Cartridge Heaters

A reliable source for Electric Heater information and leading Electric Heater Companies & Manufacturers.

The type of localized, interior heating produced by cartridge heaters is used to heat specific parts of machinery used in packaging, die cutting, mold forming, hot stamping, labeling, sealing, printing, fluid heating, food service and many other industries. Read More…

Cartridge Heaters Cartridge heaters are small, cylindrical electric heaters used to provide localized or precision heat to materials and equipment parts in a variety of settings. Similar to immersion heaters, cartridge heaters are usually inserted into a material to heat the surrounding area; unlike immersion heaters, which are usually submerged in water or other liquids, cartridge heaters are inserted into small holes drilled in metal materials and parts that require internal heat. While capable of providing localized high temperature heating, cartridge heaters can also radiate heat throughout the interior of a material or product.

Leading Manufacturers

Danvers, MA  |  978-777-0070

Backer Hotwatt is a superior designer & manufacturer of electric heaters and related heater accessories for various OEM & industrial applications. Backer Hotwatt also has a complete inventory and line of in-stock products available, as well as a technical index & heater installation instructions on our website. If you want a heater company with experience and innovation, call Backer Hotwatt!

Request A Quote

Backer Hotwatt, Inc. $$$

Bristol, CT  |  860-582-6776

For more than 70 years, Ulanet&trade has been engineering and manufacturing electric heaters, cartridge heaters, immersion heaters, tubular heaters, miniature strip heaters and bolt hole heaters, as well as industrial heaters and appliance thermostats and thermal time-delay relays.

Request A Quote

Ulanet™ $$$

Exeter, NH  |  603-418-7662

Tutco SureHeat is part of the Tutco Heating Solutions Group, the world’s largest heating element manufacturer and supplier. Tutco SureHeat is a manufacturer of high pressure, low flow, and high temperature industrial electric air heating solutions. All of our products are proudly engineered and manufactured here in the USA. Our many capabilities set us apart from our competitors, and it is our mission to help our clients improve productivity and safety in their applications.

Request A Quote

Tutco SureHeat $$$

Marietta, GA  |  888-676-0146

We are a leading innovator of electric heaters and our products are ideal for a wide range of industries. Here at Sigma Thermal we put your needs first. All of our heaters are fairly priced and come with top of the line support. Turn to us for quick turnaround and long-lasting solutions. Give one of our representatives a call today!

Request A Quote

Sigma Thermal $$$

Ipswich, MA  |  978-356-9844

Since 1921, Dalton Electric Heating has been offering electric heaters, industrial heaters, immersion heaters and cartridge heaters. Our Watt-Flex Cartridge Heaters and Diff-Therm Heaters are found worldwide in the automotive, plastics and aerospace industries. Give us a call!

Request A Quote

Dalton Electric Heating Co., Inc. $$$
placeholder image Backer Hotwatt, Inc. Ulanet™ Tutco SureHeat Sigma Thermal Dalton Electric Heating Co., Inc.

Hot plates, platens, semiconductors, shrink wrap machines and labeling machinery often use internal cartridge heaters to heat specific applicator parts. Plastic and rubber forming processes in particular make extensive use of cartridge heaters and other localized heating systems like strip heaters to assist in the plasticization of materials. Cartridge heaters are available in a wide variety of configurations and compositions to suit the equally wide variety of contexts in which they are applied.

Assembled with similar materials to other types of electric heaters, cartridge heaters are commonly formed from electric coils insulated by ceramic material and encased in a metal sheaths. Insulating materials may also be mica, mineral or fiberglass, depending on the desired wattage and application for the heater.

Insulation is necessary between the heating coil and the sheath because contact between the two materials can cause short-circuiting. Sheaths can be constructed from a variety of materials including aluminum, copper, iron, nickel and stainless steel.

Some cartridge heater configurations are folded in half, allowing the cartridge to expand as it heats, making contact with the material surrounding it on all sides, thereby providing more effective and evenly distributed heat. Engineers and designers must be extremely precise when using cartridge heaters in equipment, making sure to install cartridge heaters with the proper wattage, heat temperature and oxidation effects in relation to the material in which it will be immersed.

Cartridge Heater Informational Video