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Royco® 756 is a red oil, a super clean, highly refined mineral oil–based hydraulic fluid for operation over wide temperature ranges that meets MIL-PRF-5606.
Royco® 756, commonly referred to as red oil, is a hydraulic fluid that meets MIL-PRF-5606 specifications, superseding the previous PRF specifications. Royco® 756 fluid provides the ultimate performance in severe-duty aerospace, aircraft, and industrial hydraulic systems.
Royco® 756 hydraulic oil exhibits exceptional anti-wear and oxidation and corrosion inhibition due to the performance additives in the formulation.
Product type: Red oil hydraulic oil, fluid
Kinematic viscosity, cSt:
@ 100°C: 4.90
@ 40°C: 13.2
@ −40°C: 600
@ −54°C: 2,500
Pour point, °C: −62
Flash point, °F (C.O.C.): 231
Density (lb/gal): 7.261
Operating temperature range Unpressurized: −54°C to 90°C
Pressurized up to 3,000 psi: −54°C to 135°C
Primary Chemistry:
Mineral Oil
Poor low-temperature hydraulic fluid performance
Inefficient shear stability or loss in hydraulic fluid protection
High levels of foaming in hydraulic system
Royco® 756 hydraulic fluid is suitable for use in a broad range of civilian and military applications, including aircraft, autopilot systems, shock absorbers, missiles, cherry pickers, robotics, and auto wreckers.
Royco® 756 is also approved for applications requiring military specification (MIL-SPEC) MIL-PRF-5606H(3), superseding the following legacy specifications: MIL-H-5606G, MIL-O-5606, AN-O-336, AN-VV-O-336, and AAF-3580.
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