Fire-resistant fluids based on a solution of polymers (polyglycols) in water at a ratio of around 60:40.
HFC pressure fluids have a viscosity of 30 to 45 mm2/s at 50°C and may be used instead of mineral oils without changing devices. Sole restriction: roller bearings have a shorter lifetime given the water content of HFC pressure fluids and the working temperature is limited to a range between –20°C and +60°C. The water content must be monitored.