AeroShell Grease 33
Maximise airframe reliability with Aeroshell Grease 33, a lithium complex formulation that delivers superior performance from -73掳C to +121掳C, ensuring robust protection.
Features and benefits
Universal airframe grease
Engineered for use in commercial and military aircraft, ensuring broad compatibility across airframes.
Wide temperature range
Delivers reliable lubrication across a wide temperature range, from -73掳C to +121掳C, making it ideal for extreme conditions.
Advanced corrosion protection
Inhibits corrosion and oxidation, extending the lifespan of critical components in harsh environments.
Outstanding mechanical stability
Highly resistant to softening, which helps keep it in place, working harder for longer.
Water resistance and stability
Provides superior resistance to water washout and mechanical stability, maintaining effectiveness in challenging conditions.
Approved for global aviation standards
Meets or exceeds specifications for major commercial and military aircraft, making it a trusted choice worldwide.
Specifications & approvals
| Country / OEM | Specification |
|---|---|
| United States | MIL-PRF-23827C (Type I) |
| SAE | AMS3052 |
| NATO Code | G-354 |
| Airbus | AIMS 09-06-002 Consumable Material List (CML) Reference 03GBC1, 03GBD1 |
| Boeing | BMS 3-33C |
| COMAC | QPL-CMS-OL-302 |
The TDS and MSDS are in English, but you can find these documents for other countries in the .
Applications
AeroShell Grease 33 is approved to BMS 3-33C and offers the improved performance properties required by this specification.
AeroShell Grease 33 can be used for routine lubrication in applications where MIL-PRF-23827C is specified on aircraft manufactured by Airbus, Boeing, Embraer, Fokker, Gulfstream and other legacy OEMs like McDonnell Douglas, BAe Regional Aircraft (except for wheel bearings, applications above 121掳C and sliding applications requiring molybdenum disulphide).
AeroShell Grease 33 can also be used in some applications on aircraft which require use of MIL-G-21164. Other applications on Boeing aircraft which require use of MIL-G-21164 and other greases are being reviewed and in due course Boeing will issue details of the full range of applications. For the current status, refer to the latest issue of Boeing Service Letter "BMS 3-33C General Purpose Aircraft Grease".
Health, Safety and Environment
Health and Safety
- This product is unlikely to present any significant health or safety hazard when properly used in the recommended application and good standards of personal hygiene are maintained.
- Avoid contact with skin. Use impervious gloves with used grease. After skin contact, wash immediately with soap and water.
- Guidance on Health and Safety is available on the appropriate Safety Data Sheet, which can be obtained from
Protect the Environment
- Take used lubricant to an authorised collection point. Do not discharge into drains, soil or water.
Additional information
Advice
- Advice on applications not covered here may be obtained from your Shell representative.
Technical Talk
Greases
Get to grips with the basics of aircraft greases by reading this handy article, discussing how greases are created and their best applications for aviation engines.
Typical Physical Characteristics
| Properties | Method | BMS 3-33C | Typical | ||
|---|---|---|---|---|---|
| Oil type | - | Synthetic Hydrocarbon / Ester | Synthetic Hydrocarbon / Ester | ||
| Colour | - | Blue-green | Green | ||
| Thickener type | - | Lithium Complex | Lithium Complex | ||
| Base Oil viscosity @-40掳C mm虏/s | ASTM D445 | - | 1 840 | ||
| Base Oil viscosity @40掳C mm虏/s | ASTM D445 | - | 14.2 | ||
| Base Oil viscosity @100掳C mm虏/s | ASTM D445 | - | 3.4 | ||
| Useful operating temperature range 掳C | - | -73 to +121 | -73 to +121 | ||
| Dropping point 掳C | ASTM D556 | 205 min | 227 | ||
| Worked penetration @25掳C | ASTM D217 | 265 to 315 | 297 | ||
| Bomb Oxidation pressure @99掳C kPa (psi) drop from 758 kPa (110 psi), 100 hrs | ASTM D942 | 70 (10) max | 3.5 (0.5) | ||
| Bomb Oxidation pressure @99掳C kPa (psi) drop from 758 kPa (110 psi), 500 hrs | ASTM D942 | 105 (15) max | 34 (5) | ||
| Oil separation 30 hrs @100掳C %m | ASTM D6184 | 8 max | 2 | ||
| Water Washout @79掳C %m | ASTM D1264 | 7.5 max | <6 | ||
| Evaporation loss 500 hrs @121掳C %m | ASTM D2595 | 10 max | <10 | ||
| Anti-friction bearing performance @121掳C hrs | ASTM D3336 | 1000 min | >1 200 | ||
| Load Carrying Capability LWI @27掳C kg | ASTM D2596 | 60 min | >60 | ||
| Copper corrosion 24 hrs @100掳C | ASTM D4048 | 1B max | Passes |
These characteristics are typical of current production. Whilst future production will conform to Shell's specification, variations in these characteristics may occur.
