Mobil HyJet™ V is a Type V fire-resistant phosphate ester hydraulic fluid for commercial aircraft. Its thermal and hydrolytic stability exceed commercially available Type IV fluids, giving less in-service degradation and longer fluid life, and it is compatible in all proportions with commercial Type IV and Type V phosphate ester fluids.
Specifications and Approvals
- SAE AS1241 Type IV and Type V requirements
- Boeing BMS 3-11P Type V, Grade A and C; Boeing Long Beach DMS2014H Type 5
- Airbus NSA 307110N Type V; Gulfstream 1159SCH302J Type V
Typical Properties
- Density at 15.6 °C (60 °F): 8.35 lb/US gal; specific gravity (25 °C): 0.997
- Kinematic viscosity: 10.6 mm²/s at 37.8 °C (100 °F); 1350 mm²/s at −54 °C (−65 °F)
- Flash point (COC): 174 °C (346 °F); fire point (COC): 186 °C (366 °F); autoignition: >427 °C (800 °F)
- Pour point: −62 °C (−80 °F); acid number: 0.04 mg KOH/g; cleanliness NAS 1638 Class 7
Benefits
- Higher stability than Type IV fluids, reducing fluid replacement and hydraulic system maintenance
- Low density for lower fluid weight and fuel consumption
- Rust protection and improved erosion protection for servo valves and pumps
| Packing | 1 Qt or 1 Gallon or 55 USG |