| HLP | High performance cartridge heater |
| HLPA | Automotive high-power cartridge heater |
| RP | High Performance Tubular Heater |
| ALW | Braking/Retardation Resistors |
| RHK | Tubular Heater |
| RKF | Flat Tubular Heater |
| RHR | Finned tubular heating element |
| EHK | Immersion Heater |
| HP | Nozzle heater |
| HPQ | Nozzle Heater Q-series |
| TE | Temperature sensors |
| HLPR | PTC-heating elements |
| FLC | Flat heating element |
| RKW | Railway point heaters |
| HRR | electrical air heater |
| HR | spiral heater |
| PMV | Lightly compacted cartridge heater |
| PMVA | Compacted heating element |
| PK | heating unit without metal casing |
Finnend tubular heating elements are based on a RHK type heaters. The surface area is enlarged by a strip in order to heat gases. At a high power the surface temperature is small and the heating element is short.
| max. temperature at tube sheath | 700° (at CrNi-steel) |
| diameters (with RHK 8,5mm) | 20 and 28 mm |
| Distance between fins | 5 mm |
Channel air heaters for air-conditioning and drying apparatus