Mobil Pyrotec HFD-U 46
Mobil Pyrotec HFD-U 46 is a fully synthetic ester-based fire-resistant hydraulic fluid engineered to meet the requirements of DIN EN ISO 12922. The formulation uses environmentally friendly additives and is readily biodegradable, making it suitable for applications where both fire safety and environmental protection are important.
One of the key advantages of Mobil Pyrotec HFD-U 46 is its excellent thermal and oxidation stability. The fluid helps reduce deposit formation and maintain system cleanliness, contributing to extended oil and filter life while reducing maintenance downtime and operating costs.
Mobil Pyrotec HFD-U 46 also provides strong anti-wear and anti-corrosion protection. The formulation helps protect pumps, valves and hydraulic components from wear and scuffing, supporting long equipment life and reliable system operation.
Another important benefit is its fire-resistant performance combined with environmental compatibility. The biodegradable synthetic ester formulation makes the product suitable for use in areas with increased fire risk or environmental sensitivity such as mining, forestry and steel production.
Mobil Pyrotec HFD-U 46 also offers wide temperature performance. Its low-temperature characteristics allow reliable operation across varying operating conditions while maintaining consistent viscosity and lubrication performance.
The product is recommended for hydraulic and circulation systems operating in conditions subject to fire hazards, including steel mills, blast furnaces, reheating furnaces, continuous casting equipment, underground mining, tunnelling and construction equipment. It is also suitable for applications in environmentally sensitive areas requiring biodegradable fluids.
Physical characteristics include a kinematic viscosity of approximately 48 mm²/s at 40°C and 10 mm²/s at 100°C, with a viscosity index of around 195. Mobil Pyrotec HFD-U 46 has a density of approximately 919 kg/m³ at 15°C, a flash point of approximately 300°C and a pour point of approximately −39°C, supporting reliable performance in fire-resistant hydraulic applications.
