Nexthermal’s  High Watt Density Cartridge Heaters or Pencil Heaters are fast responding heaters that can be precisely profiled to help your equipment operate at peak performance levels. Nexthermal has studied specific applications and has developed industry specific algorithms that calculate distribution profiles for plastics, rubber, packaging and other applications. Nexthermal Cartridge heaters core construction and available options results in the performance, durability and value you need from a cartridge heater.