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HomeShop SuppliesFluids, Oils, & LubricantsHydraulic FluidROYCO® 770 Super Clean Synthetic Hydraulic Fluid - MIL-PRF-46170DROYCOŽ 770 Super Clean Synthetic Hydraulic Fluid - MIL-STD-2073-1D - 55 Gallon Drum
ROYCOŽ 770 Super Clean Synthetic Hydraulic Fluid - MIL-STD-2073-1D - 55 Gallon Drum
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ROYCOŽ 770 Super Clean Synthetic Hydraulic Fluid - MIL-STD-2073-1D - 55 Gallon Drum

Part#: 770-55GL
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Our Price: $2,399.25
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Country of Origin: USA
International Orders
Material Safety Information
Material Safety Data Sheet: MSDS1
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ROYCO 770 is a synthetic hydraulic fluid developed to meet the severe duty demands of today's military and industrial equipment. Rust inhibitors are utilized to provide protection to ferrous components and modern additive technology is employed for oxidative stability, corrosion inhibition, and antiwear protection. ROYCO 770 is intended for use in severe duty applications requiring extremes in environment and/or extended time periods between operation such as tank and howitzer recoil mechanisms and hydraulic systems, snow removal, earth moving and heavy duty construction equipment, and industrial robotic hydraulic systems. ROYCO 770 is especially recommended in applications where rust protection together with a high flash point can afford an extra margin of safety and fire protection.
Product Details
UOM : Each
Size : 55 Gallon
Shipping Weight : 520 pounds
Manufacturer P/N : 770-55GL
ECCN : 1C996
Schedule B Code : 3403.99.0000
Military Standard : MIL-STD-2073-1D, MIL-PRF-46170D
Disclaimer: While reasonable efforts have been made to ensure all information on this website is accurate, and Styles Logistics, Inc. do not assume responsibility for any errors or omissions. All specifications, illustrations, data and prices are subject to change without notice.
  • Synthetic hydrocarbon base fluid (PAO)
  • Superior corrosion and anti-rust inhibition
  • Superior performance to older generation naphthenic/mineral oil based fluids
  • Compatibility with components, including seals and hoses used in systems designed for naphthenic based fluids
  • Miscible in all proportions with other PAO based as well as with naphthenic oil based fluids
  • Excellent for protection of ferrous components in applications or storage
Typical Properties ROYCO 770
Kinematic Viscosity, cSt
@ 100°C
@ 40°C
@ -40°C
@ -54°C

Flash Point, °C 228
Pour Point, °C -60
Total Acid Number, mg KOH/g 0.10
Specific Gravity, (15.6°C) 0.859
Trace Sediment, ml 0.001
Water Content, % wt 0.02
Synthetic Rubber Swell, "L", 158°F/168 hrs.
4-Ball Wear, mm2 scar
10 Kg/1200 RPM/1 hr/75°C
40 Kg/1200 RPM/1 hr/75°C

Solid Particle Contamination, auto counter, particles/liter
5-25 mu
26-50 mu
51-100 mu
100+ mu

Foam Characteristics, ml @ 5 min blow/ml @ 10 min
Seq. I Volume of foam/collapse (sec)
Seq. II
Seq. III

Gravimetric Filtration, mg .2
Fire Point, °C 250
Autoignition, °C 387
Water Sensitivity, % trans. 98
Evaporation, % loss 300°F/22 hrs. 2.5
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