GC-coil coil heaters are available in various cross sections and sizes and offer high-capacity electrical heating in the tightest of installation spaces at temperatures of up to 750 °C on the cartridge sheath. The minimum bending radius of R3 to R13 allows the use of the GC-coil coil heaters not only in straight or coiled form, but in almost every geometrical shape. An optionally integrated thermocouple enables precise temperature control.