Last 5 Times Longer

Cartridge heater life is directly related to its internal operating temperature.
Watt-Flex cartridge heaters run substantially cooler and have a more uniform temperature profile than conventional heaters.

The result is Watt-Flex heaters that last up to 5 times longer, have less downtime and lower operating costs than conventional cartridge heaters.

Efficient Heat Transfer

  • The high purity MgO dielectric in Watt-Flex heaters is compacted to extreme density, ensuring maximum heat transfer away from the coil to the heater sheath.
  • As the energized split-sheath expands, it creates intimate contact with the bore wall, efficiently transferring heat from the heater sheath to the host metal.

Conventional ceramic core cartridge heaters (shown below) use multiple heating cores that can independently burn out, causing a cold section on the sheath. And voids of coil at core junctions produce cold sections on the heater profile.

Conventional Cartridge Heater

Unlike conventional ceramic heaters, Watt-Flex heaters use a continuous heating coil to achieve a more uniform temperature profile. With Watt-Flex heaters, there are no independent heating element sections to burn out. Watt-Flex heaters are either totally on or totally off.

Watt-Flex Cartridge Heater



Bore Seizure

Uneven Heat

Cost of Heating