AeroShell Grease 33 for Aircraft – 14.1 oz Tube | Aviation MIL-PRF-23827C
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AeroShell Grease 33 for Aircraft – Anti-Freezing, Water, Corrosion & Oxidation Resistant Grease
Part Number: 550062438-14.1OZ | Size: 14.1 oz Tube
AeroShell Grease 33 is one of the most trusted multi-purpose aviation greases in the world, engineered specifically for the demanding environments that aircraft operate in every day. Developed by Shell Aviation — a name synonymous with quality and performance in the aerospace industry — Grease 33 is formulated to deliver exceptional protection across a wide temperature range, making it the go-to lubricant for airframes, landing gear, control systems, and wheel bearings on both piston and turbine aircraft.
Whether you're a line mechanic performing routine maintenance at a regional MRO, a Part 145 repair station technician, or a private pilot keeping your aircraft airworthy between annual inspections, AeroShell Grease 33 delivers the reliability and long-lasting protection your aircraft deserves.
Available in a convenient 14.1 oz tube, this grease is easy to apply with a standard grease gun, making it ideal for shop use and field maintenance alike.
Key Features & Benefits
Anti-Freezing Performance AeroShell Grease 33 maintains its consistency and lubricating properties in extreme cold, resisting hardening or separation at low temperatures. This is critical for aircraft operating in cold weather environments or at high altitudes where temperatures can plummet well below freezing. You can count on Grease 33 to keep moving parts moving — even when the thermometer drops.
Superior Water Resistance Moisture is one of the most persistent enemies of aircraft components. Grease 33's advanced formulation creates an effective barrier against water intrusion, preventing washout and maintaining a consistent lubricating film even in wet, humid, or marine operating environments. This makes it an excellent choice for floatplane applications and aircraft based in high-humidity coastal regions.
Corrosion Protection The aviation environment exposes metal components to constant threats from oxidation, salt air, and chemical exposure. AeroShell Grease 33 provides strong anti-corrosion protection, forming a protective film over metal surfaces that inhibits rust and corrosion between lubrication intervals. This extends the service life of costly components like landing gear bushings, rod end bearings, and control surface hinges.
Oxidation Resistance Grease that oxidizes breaks down over time, becoming hard, tacky, or gummy — and a compromised lubricant can contribute to component wear and failure. Grease 33 is formulated to resist oxidation, maintaining its structural integrity and lubricating performance over extended service intervals and in high-temperature applications.
Wide Operating Temperature Range Engineered to perform from -73°C (-100°F) to +121°C (+250°F), AeroShell Grease 33 is effective across the full range of temperatures most aircraft encounter — from frigid high-altitude cruise conditions to the heat generated by wheel bearings during landing operations.
Multi-Purpose Versatility One of the most practical advantages of AeroShell Grease 33 is its multi-purpose designation. A single product handles a wide range of airframe lubrication points, reducing the need to stock multiple greases in the shop and simplifying maintenance procedures for technicians.
Technical Specifications
- Base Oil: Synthetic (Diester)
- Thickener: Lithium Soap
- NLGI Grade: 2
- Color: Amber / Light Brown
- Operating Temperature Range: -73°C to +121°C (-100°F to +250°F)
- Dropping Point: >180°C (356°F)
- Worked Penetration: 265–295 (NLGI 2)
- Container Size: 14.1 oz (400g) Tube
- Part Number: 550062438-14.1OZ
Specifications & Approvals Met
- MIL-PRF-23827C – Military Performance Specification for Aircraft and Instrument Greases
- DEF STAN 91-052 – UK Defence Standard
- AIR 4206/A – French Aviation Standard
- Approved for use on Boeing, Airbus, and most major OEM airframe lubrication points (refer to your aircraft's AMM for specific approved materials)
Recommended Applications
AeroShell Grease 33 is approved and recommended for use in a wide variety of aircraft lubrication points, including:
- Landing gear – actuator rod ends, torque links, side brace bearings, and bushings
- Control surfaces – aileron, elevator, and rudder hinge bearings and rod ends
- Wheel bearings – main gear and nose gear wheel bearings (where grease-lubricated bearings are specified)
- Flap tracks and actuators
- Door hinges, latches, and mechanisms
- Cowl hinges and fasteners
- Engine control linkages
- Nose gear steering components
- General airframe grease fittings (zerks)
Why Mechanics & Pilots Choose AeroShell Grease 33
AeroShell Grease 33 has earned its place on the shelves of MROs, FBOs, and flight schools around the world for good reason. It's a product that mechanics trust because it performs as specified, conforms to stringent military and OEM standards, and protects the components they work hard to maintain. For pilots who take an active role in their own aircraft maintenance — particularly those flying under owner-operator privileges — Grease 33 provides peace of mind knowing that every lubrication point is protected by a product with decades of proven aviation service history.
The 14.1 oz tube format is perfectly sized for regular shop use and A&P toolboxes alike, offering enough product to complete full airframe lubrication services on general aviation aircraft without the bulk or waste of larger containers. The tube fits standard grease guns and makes precise application clean and straightforward.
When the FAA, OEMs, and military operators all point to the same product, the choice is clear. AeroShell Grease 33 is the standard by which aviation greases are measured.
Compliance & Regulatory Notes
Always consult your aircraft's Airframe Maintenance Manual (AMM) or Instructions for Continued Airworthiness (ICA) to confirm the approved lubricants for each specific application. AeroShell Grease 33 meets MIL-PRF-23827C, which is referenced in the maintenance documentation for a wide range of certified aircraft.
| General Information | |
|---|---|
| Part # | 550062438-14.1OZ |
| Manufacturer | AeroShell |
| MSDS 1 | View Safety Data Sheet |
| Shipping Information | |
|---|---|
| Product Weight | 0.96 lbs. |
| Product Dimensions | 10 x 2 x 2 in. |
| Schedule B | 3403990000 |
| ECCN | EAR99 |
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QUESTIONS & ANSWERS
AeroShell Grease 33 is an advanced lithium-complex aviation grease formulated with synthetic base oils and a modern additive package. It delivers long-lasting corrosion protection, strong water resistance, and excellent mechanical stability, making it a dependable all-purpose lubricant for a wide range of aircraft maintenance tasks.
AeroShell Grease 33 is engineered for routine lubrication of airframe components, landing gear mechanisms, hinges, and flight control linkages. It also performs reliably in actuators, sliding assemblies, and other moving parts exposed to vibration or moisture. Because it can replace several legacy greases, it simplifies stocking and maintenance procedures.
This grease maintains effective lubricating performance from -99°F to 250°F (-73°C to 121°C). Its broad operating range makes it suitable for both high-altitude environments and ground-level conditions where temperature swings can be significant.
AeroShell Grease 33 provides strong load-carrying capability, excellent corrosion and oxidation resistance, and reduced wear across key aircraft systems. Its long service life helps minimize maintenance intervals, and its ability to replace multiple greases lowers the risk of using the wrong lubricant on critical components.
AeroShell Grease 33 can be used with several older AeroShell formulas; however, mixing greases is not recommended. Differences in thickener systems and additives can affect performance or lead to compatibility issues. For best results, components should be cleaned before transitioning to AeroShell 33.
AeroShell 33 is approved for use in many wheel bearing applications, though it is primarily formulated as an airframe grease. For wheel bearings subjected to higher temperatures or more demanding loads, AeroShell Grease 22 may offer a better performance match.
AeroShell Grease 33 adheres well to metal surfaces and resists washout, even in humid, coastal, or marine conditions. Its corrosion-inhibiting additives provide strong protection against rust and moisture-related wear.
Yes. AeroShell Grease 33 meets the specifications of MIL-PRF-23827C and Boeing BMS 3-33B and is widely approved for use on commercial, regional, and military aircraft. Its broad acceptance makes it a preferred choice for mixed fleets.
AeroShell Grease 33 does not contain chemicals classified under REACH as persistent, bioaccumulative, or toxic. It is not regarded as an environmental hazard and contains no known endocrine-disrupting substances.
AeroShell Grease 33 is considered a mild skin sensitizer and eye irritant. Prolonged skin contact may cause irritation, so gloves and protective eyewear are recommended when handling the product.
Store this grease in tightly closed, properly labeled containers in a dry, ventilated location. Keep it away from heat sources, direct sunlight, and strong oxidizers. Avoid exposing polyethylene containers to high temperatures to prevent deformation.
AeroShell Grease 33 is a semi-solid blue-green lubricant with a faint hydrocarbon odor. It features a high dropping point (around 216°C) and a flash point above 215°C, contributing to its strong thermal stability and resistance to structural breakdown.
Yes. Its synthetic base oils and optimized additive chemistry provide dependable lubrication in bearings, actuators, and other components exposed to heavy loads or rapid motion. It helps limit wear, friction, and temperature rise under demanding conditions.
While AeroShell 33 is not readily biodegradable, it is considered environmentally stable and non-toxic to aquatic organisms at typical use levels. Proper disposal through approved waste-handling channels is still required to prevent environmental contamination.
