On order
AeroShell Fluid 31
Fire-resistant synthetic aircraft hydraulic fluid, −40 to +205 °C
MIL-PRF-83282D
Specifications
- Brand
- Shell
- Category
- Aviation hydraulic fluids
- Manufacturer code
- 001O6611
- 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 AeroShell Fluids 4, 41, 51, 61 and 71 and can be used in systems designed to operate with MIL-PRF-5606, MIL-PRF-6083, 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 | Limit |
|---|---|---|
| Oil type | Synthetic Hydrocarbon | Synthetic Hydrocarbon |
| Kinematic viscosity @205°Cmm2/s | 1.1 | 1.0 minimum |
| Kinematic viscosity @100°Cmm2/s | 3.53 | 3.45 minimum |
| Kinematic viscosity @-40°Cmm2/s | 1937 | 2200 maximum |
| Flash point (Cleveland Open Cup)°C | 225 | 205 minimum |
| Fire point°C | 248 | 245 minimum |
| Total aciditymgKOH/g | 0.04 | 0.10 maximum |
| Evaporation loss 6.5 hrs @205°C%m | 17 | 20 maximum |
| Relative density @15.6°C | 0.850 | Report |
| Low temperature stability 72 hrs @-40°C | Passes | Must pass |
| High Temperature Stability 100 hrs @205°C | Passes | Must pass |
| Gravimetric filtrationmg/100ml | 0.1 | 0.3 maximum |
| Filtration timeminutes | 5 | 15 maximum |
| Particle count, automatic, 5 to 15 µmper Lt | Passes | 10000 maximum |
| Particle count, automatic, 16 to 25 µmper Lt | Passes | 1000 maximum |
| Particle count, automatic, 26 to 50 µmper Lt | Passes | 150 maximum |
| Particle count, automatic, 51 to 100 µmper Lt | Passes | 20 maximum |
| Particle count, automatic, >100 µmper Lt | Passes | 5 maximum |
| Water contentppm | Passes | 100 maximum |
| Foaming tendency, ASTM Seq 1 | Passes | Must pass |
| Flame propagationcm/s | Passes | Must pass |
| Rubber swell, NBR-L% | Passes | 18 to 30 |
| 4-Ball Wear, 1 hr @75°C, scar dia, 1 kg load/1200 rpmmm | 0.20 | 0.21 maximum |
| 4-Ball Wear, 1 hr @75°C, scar dia, 10 kg load/1200 rpmmm | 0.25 | 0.30 maximum |
| 4-Ball Wear, 1 hr @75°C, scar dia, 40 kg load/1200 rpmmm | 0.55 | 0.65 maximum |
| Oxidation & Corrosion stability 168 hrs @121°C - metal weight change | Passes | Must pass |
Complete documentation
We email you the sheets listed below in a single archive. No account, no order required.
- TDS
- SDS
- SDS