Phillips 66® FR Fluid-Glycol is a water-glycol based fire-resistant HYDRAULIC FLUIDS developed for use in industrial hydraulic systems operating in areas subject to fire hazards. It contains sufficient water to snuff out a fire resulting from ignition of a fluid leak. It is suitable for use in hydraulic systems operating at 2,000 to 3,000 psi, and can withstand intermittent pressure spikes up to 5,000 psi.


Features & Benefits

  • Fire-resistant for safety
  • Excellent wear protection for hydraulic pumps and motors
  • Excellent rust and corrosion protection
  • Good foam resistance
  • Glycol content protects against freezing
  • Compatible with other water-glycol fluids


  • Hydraulic systems on equipment operating in areas subject to fire hazards, such as:
  • Steel and aluminum mills
  • Molding and metal die casting machinery
  • Welding machines
  • Foundries
  • Furnace charging equipment
  • Open hearth and basic oxygen furnace (B.O.F.) equipment
  • Power transmission plants

Technical Details

  • ISO Grade: 32/46
  • Licenses & Approvals

    FR Fluid-Glycol meets the requirements of the following OEM specifications:

    #ISO HFC (fire-resistant water-glycol mixture, >35% water) #Denison Hydraulics HF-4 #U.S. Steel 171

    Additional Details

    ISO Grade 32/46
    Specific Gravity @ 60°F 1.08
    Density, lbs/gal @ 60°F 9
    Color, Visual Red
    Freezing Point, °C (°F) -55 (-48)
    cSt @ 40°C 39.3
    cSt @ 100°C 8.5
    SUS @ 100°F 198
    SUS @ 210°F 54.7
    Viscosity Index 202
    Four-Ball Wear, ASTM D4172, Scar Diameter, mm 0.48
    pH (neat) 9.7
    Rust Test, ASTM D665 A&B Pass
    Water, wt % 40