Mobil Pyrotec HFC 46

Fire-Resistant Hydraulic Fluid

Mobil Pyrotec HFC 46 is water glycol hydraulic fluid technology with improved fire resistance while protecting equipment under severe service conditions. It is designed particularly for hydraulic systems utilizing vane, gear and piston hydraulic pumps used in, for example, the steel, aluminum and die-casting industries. It is very shear stable offering enhanced corrosion resistance performance and seal compatibility, providing excellent pump lubrication which can help to extend equipment service life.


Features and Benefits

Mobil Pyrotec HFC 46 has the following potential benefits:

•  Inherent resistance to fire hazards

•  Excellent anti-wear properties helping to extend component life

•  Long fluid life due to high oxidation resistance

•  FM approved as a fire resistant industrial fluid.



Mobil Pyrotec HFC 46 is recommended for use in:

     •  Hydraulic systems utilizing vane, gear and piston hydraulic pumps

     •  Hydraulic and oil circulation systems operating in conditions subject to fire hazards


Specifications and Approvals

This product meets or exceeds the requirements of:

FM Global Approvals Class 6930

ISO L-HFC (ISO 12922:2020)


Properties and Specifications




ISO 46

Appearance, AMS 1738


Copper Corrosion, 24 hrs @ 50C, Rating, ISO 2160


Pour Point, °C, ASTM D97


Viscosity @ 40 deg C, cSt, ASTM D445


Viscosity Index, ASTM D2270



Health and safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @