TYPICAL PROPERTIES:

PROPERTIES Kinematic Viscosity, cSt @ 100° @ 40° @ -40° @ -55° Flash Point °C Fire Point, °C TAN, mq KOH/g Evaporation,150°6.5 hr,% Specific Gravity Pour Point °C Low Temp. Stability, -54°C/72 hr High Temp. Stability, % viscosity. Gravimetric Filtration, mg/100 ml Filter Time, minutes Automated Particles, particles/l 5-15 mu 16-25 mu 26-50 mu 51-100 mu > 100 mu Water Content, ppm Foam Resistance, ASTM Seq I Flame Propagation, cm/sec. Rubber Swell, NBR-L, % * 4-Ball Wear, 75oC, mm diameter 1 kg Load 10 kg Load 40 kg Load

ROYCO 777 2.14 6.88 495 2045 180 195 0.0 12.5 0.846 -67 Conforms Conforms 0.12 3.5 1400 150 50 3 0 65 20 Conforms 23 0.17 0.22 0.52

APPLICATIONS:
ROYCO 777 is recommended for use in aircraft, ordnance, and missile systems operating from -54oC to +135oC. This fluid should be considered for use in auto pilots, shock absorbers, brakes, flight-control systems,
hydraulic servo-control systems, and other systems using synthetic elastomer seals. This fluid is especially recommended for use in high altitude aircraft that normally operate with extended loiter times and high endurance levels such as UAV's and ELINT systems.

SPECIFICATIONS:
ROYCO 555 meets the requirements of and is qualified under U.S. Military specification: DoD-PRF-85734 as well as meeting the requirements of:
▪ U.K. DERD.2497 ▪ XAS-2354 ▪ British DEF STAN 91-100 ▪ NATO Code O-160
▪ UK Joint Service Designation OX-26 ROYCO 555 is approved commercially for use in aircraft transmissions, gearboxes, and gas turbine engines
manufactured by Pratt & Whitney (521C Type II), Pratt & Whitney Canada, IAE, CFM International, General Electric (D-50 TF 1), RR Allison (EMS-53 (Obsolete)) , Rolls Royce, Garrett, Motorlet, and Turbomeca, as well as Garrett and Sunstrand accessories. A detailed application list is available upon request. ROYCO 555 is also approved for use in Eurocopter/Aerospatiale, Boeing Vertol, Bell Helicopter Textron, Agusta,
Hughes/McDonnell Douglas, MBB, Sikorsky, and Westland helicopter transmissions.