On order
AeroShell Fluid 31
Fire-resistant synthetic aircraft hydraulic fluid, −40 to +205 °C
Approved MIL-PRF-83282D (US)
Specifications
- Brand
- Shell
- Category
- Aviation hydraulic fluids
- Manufacturer code
- 001O3986
- Availability
- On order
Manufacturer's description
AeroShell Fluid 31 is a synthetic hydrocarbon-based aircraft hydraulic fluid with greatly improved fire resistance characteristics when compared with conventional petroleum products. AeroShell Fluid 31 has a specially designed base stock which imparts a relatively high flash point, excellent low temperature properties and good oxidation and thermal stability. In addition, AeroShell Fluid 31 is formulated with high technology additives to provide oxidation and corrosion resistance, antiwear, and anti-foaming protection. AeroShell Fluid 31 is a synthetic hydrocarbon based aircraft hydraulic fluid with greatly improved fire resistance characteristics when compared with conventional petroleum products. AeroShell Fluid 31 has a specially designed base stock which imparts a relatively high flash point, excellent low temperature properties and good oxidation and thermal stability. In addition, AeroShell Fluid 31 is formulated with high technology additives to provide oxidation and corrosion resistance, antiwear, and anti-foaming protection. AeroShell Fluid 31 is superclean filtered to ensure optimum performance in particulate monitored systems.
Applications
- AeroShell Fluid 31 is recommended for use in aircraft, ordnance, and missile systems operating from –40 0 C to +205 0 C . This fluid should be considered for use in auto pilots, shock absorbers, brakes, flight control systems, hydraulic servo-controlled systems and other systems using synthetic elastomer seals. An increasing number of aircraft manufacturers now recommend use of this type of fluid in aircraft hydraulic systems in preference to mineral hydraulic oils. This move has been prompted by need to use fluids with better fire resistant properties.
- AeroShell Fluid 31 is also approved for use in the Honeywell (formerly Garrett) cooling turbine (cabin air compressors). Increasingly this type of hydraulic fluid is being adopted for use in hydraulic systems of military aircraft in place of mineral hydraulic fluids.
- AeroShell Fluid 31 is a synthetic hydrocarbon oil and should not be used in contact with incompatible seal materials.
- AeroShell Fluid 31 is compatible with the other AeroShell Fluid 31 is compatible with the other AeroShell hydraulic fluids and is designed to operate with MIL-PRF-5606, MIL- PRF-87257 and MIL-PRF-46170 fluids.
- Chlorinated solvents should not be used for cleaning hydraulic components which use AeroShell Fluid 31. The residual solvent contaminates the hydraulic fluid and may lead to corrosion.
Standards & approvals
Typical characteristics
| Property | Typical value | Method |
|---|---|---|
| ColourVisual | Red | |
| Oil type | Synthetic Hydrocarbon | |
| Specific gravity @15.6/15 | 0.8380 | ASTM D1298 |
| Kinematic viscosity @205°Cmm2/s | 1.1 | ASTM D445 |
| Kinematic viscosity @100°Cmm2/s | 3.63 | ASTM D445 |
| Kinematic viscosity @40°Cmm2/s | 15.0 | ASTM D445 |
| Kinematic viscosity @–40°Cmm2/s | 2 088 | ASTM D445 |
| Pour point°C | -69 | ASTM D97 |
| Flash point°C | 221 | ASTM D92 |
| Fire point (COC)°C | 251 | ASTM D92 |
| Total acid numbermgKOH/g | 0.05 | ASTM D664 |
| Evaporation loss @205°C%m | 17.8 | FED-STD-791 M.350 |
| Low temperature stability 72 @-40°C | Passes | FED-STD-791- |
| Barium contentmg/kg | 0.78 | ASTM D5185 |
| Gravimetric analysismg/100ml | 0.05 | ASTM D4898 |
| Solid Particle Contamination | Passes | FED-STD-791 M.3009 |
| Water contentmg/kg | 32 | ASTM D1744 |
| Foaming characteristics - Seq I Tendency Stabilityml/ml | Passes | ASTM D892 |
| Flame Propagationcm/s | Passes | ASTM D5306 |
| 4-Ball Wear, 75°C - scar dia1kg mm | 0.20 | ASTM D4172 |
| 4-Ball Wear, 75°C - scar dia 10kg mm | 0.23 | ASTM D4172 |
| 4-Ball Wear, 75°C - scar dia 40kg mm | 0.46 | ASTM D4172 |
| Corrosion and oxidation Stability 168 hrs - metal weight change @121°Cmg/cm2 | Passes | ASTM D4636 |
| Corrosion and oxidation Stability (168 hrs @121°C) - Viscosity change% | 0.27 | ASTM D4636 |
| Corrosion and oxidation Stability 168 hrs - Acid number change @121°CmgKOH/g | 0.01 | ASTM D4636 |
Complete documentation
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- TDS
- SDS
- SDS