Nyco HYDRAUNYCOIL-FH51 (1-USqt-Can)

Additional Product Information

Overview

Nyco Hydraunycoil FH 51 is a petroleum-based hydraulic fluid specifically developed for aviation and defense hydraulic systems operating under extreme temperature and reliability demands. Commonly used across aircraft landing gear, flight control systems, and military ground equipment, it delivers stable viscosity, excellent low-temperature behavior, and strong protection against wear, corrosion, and oxidation. Aviation and MRO teams rely on this fluid for its proven compliance with global military and OEM specifications and its consistent performance in both sealed and open hydraulic circuits.

Key Technical Specs for HYDRAUNYCOIL FH 51

• Type: Petroleum-based hydraulic fluid with antioxidant, anti-wear, and anti-corrosion additives
• Viscosity: 14 cSt at 40°C (ASTM D445)
• Viscosity Index: >300
• Color: Limpid red
• Density: 0.870 g/cm³ at 20°C (7.26 lb/gal at 68°F)
• Service Temperature: -54°C to +135°C (-65°F to +275°F) in sealed systems; up to +90°C (+194°F) in open systems
• Pour Point: -69°C (-92°F)
• Flash Point: 91°C (196°F)
• Auto-Ignition Temperature: 245°C (473°F)
• Evaporation Loss: 16.2% at 71°C / 160°F (6 hours)
• Wear Protection: 4-ball wear scar 0.88 mm at 392 N
• Foaming Tendency/Stability: 42/0 ml at 24°C (75°F)
• Typical Uses: Aircraft hydraulic systems, landing gear shock struts, military hydraulic equipment

Approvals & Specifications

• MIL-PRF-5606 H
• NATO Code: H-515
• DEF STAN 91-48 Issue 2
• DCSEA 415/A
• OM-15
• Airbus CML 02BBB9
• ATR CML 02-001

Typical Aircraft MRO / AOG Applications

• Landing gear shock strut servicing on civil and military aircraft
• Hydraulic flight control systems for fixed-wing aircraft
• Hydraulic systems on helicopters and missiles
• Ground support equipment and test rigs
• Military vehicles including tanks and armored platforms

Compatibility & Safety Notes

• Compatible with NBR-L elastomers commonly used in aviation hydraulic systems
• Low water content helps prevent corrosion and system degradation
• Use appropriate PPE including gloves and eye protection during handling
• Avoid mixing with non-approved hydraulic fluids
• Follow standard aviation hydraulic system cleanliness procedures

Packaging & Procurement

• Available in multiple packaging sizes suitable for hangar and field use
• Micro-filtered and supplied with controlled contamination levels
• Stable for long-term storage when kept sealed in a cool, dry environment
• Clearly identifiable red color simplifies fluid verification during maintenance
• Suitable for bulk supply or AOG-ready inventory stocking

Why HYDRAUNYCOIL FH 51 is Chosen for AOG / MRO

• Wide operating temperature range supports rapid aircraft return to service
• Global military and OEM approvals reduce qualification delays
• Excellent low-temperature fluidity for cold-weather AOG events
• High cleanliness level protects precision hydraulic components
• Proven reliability in both aviation and military ground operations

Practical Suggestions for Your Team (AOG Mindset)

• Stock for cold-weather and high-altitude operational regions
• Label storage clearly to avoid cross-contamination with other hydraulic fluids
• Train technicians on MIL-PRF-5606 fluid handling and system compatibility
• Maintain sealed containers on mobile support units for AOG response
• Implement regular fluid condition checks during scheduled maintenance

Manufacture / Aviation Spec Codes

• Manufacturer: NYCO
• Product ID: HYDRAUNYCOIL FH 51
• NATO Supply Code: H-515
• Military Specification: MIL-PRF-5606 H
• Export Classification: Standard petroleum hydraulic fluid

Alternative Names & Descriptions

• MIL-PRF-5606 Hydraulic Fluid
• NATO H-515 Hydraulic Oil
• Aircraft Shock Strut Hydraulic Fluid
• Red Aviation Hydraulic Fluid 5606
• Military Petroleum-Based Hydraulic Oil