Hot water is conveyed by pumps for a variety of purposes in thermal energy generating systems, district heating
systems, home heating systems and so on. The suitability of a mechanical seal for such applications depends on many
different parameters, e.g. pressure to be sealed, temperature at the seal, sliding velocity, power consumption, water quality (pH-value, O2- dose, conductivity, operating mode), water additives such as corrosioninhibitors etc.