CASTROL-AERO-40-YELLOW (5-gal-Can)
Total Available Stock: 184
CASTROL-AERO-40-YELLOW (Also known as: Castrol Aero 40, Aero 40 Yellow Hydraulic Fluid & BMS 3-32C Type II Fluid)
Summary: CASTROL AERO 40 YELLOW is a high-performance, mineral-based hydraulic fluid formulated for aircraft landing gear shock struts.
MRO Category: Consumables / Fluids & Lubricants
Manufacturer Part Number: 157FCF
Sub-Category: Hydraulic Fluids / Aircraft Landing Gear / Shock Strut Fluids
Function: Provides damping, shock absorption and protection for landing gear assemblies. Maintains fluid performance under operational temperature extremes.
Use Cases: Overhaul and servicing of aircraft landing gear shock struts.
Description:
CASTROL AERO 40 YELLOW is a high-performance, mineral-based hydraulic fluid specifically formulated for aircraft landing gear shock struts. Supplied in a 5-gallon (18.93?L) steel can, weighing approximately 21.77?kg (48?lbs.). This fluid meets stringent aerospace specifications including Boeing BMS 3-32C Type II and MIL-H-5606 standards. CASTROL AERO 40 YELLOW provides exceptional damping and shock absorption for landing gear assemblies, minimizing galling of shock strut upper bearings and reducing martensitic streaking in outer cylinders. Aviation engineers, MRO teams and ground crew rely on its proven performance to maintain safe, reliable operation across commercial and military aircraft, whether in routine maintenance or urgent AOG scenarios.
Aircraft engineers and MRO teams value the CASTROL AERO 40 YELLOW for its compatibility with seals, hoses and common shock strut materials, making it ideal for both hangar maintenance and on-wing AOG repairs. Holding this hydraulic fluid in stock ensures ground crew can rapidly respond to urgent landing gear maintenance without delays, keeping aircraft operational and safe. If you would like to learn more about purchasing the CASTROL AERO 40 YELLOW, please email sales@aerospheres.com, call UK +44 (0)3333 247 777 or US +1 888 421 7703, or simply click the Add To Cart option on the Aerospheres product page.
Spec Sheets For CASTROL-AERO-40-YELLOW:
CASTROL-AERO-40-YELLOW Technical Data Sheet
Safety Data Sheet for CASTROL-AERO-40-YELLOW
Information
Additional Product Information
CASTROL AERO 40 YELLOW is the trusted choice for aircraft engineers and MRO teams around the world because it delivers proven, high-performance damping and shock absorption for landing gear assemblies. From the most advanced military jets to passenger airliners carrying millions of passengers, engineers rely on its BMS 3-32C Type II and MIL-H-5606 approved formula to keep landing gear operating safely and reliably. Ground crew and AOG teams value it for fast, dependable on-wing repairs and routine maintenance, preventing costly downtime. That’s why the CASTROL AERO 40 YELLOW is stocked across aviation maintenance facilities as a mission-critical hydraulic fluid.
Key Technical Specs for CASTROL-AERO-40-YELLOW
- Type: Mineral-based hydraulic fluid, straw yellow in colour.
- Volume / Container: 5?gal (18.93?L) steel pail, ~21.77?kg (48?lbs.).
- Primary Use: Shock absorption and damping for aircraft landing gear struts.
- Performance: Maintains consistent viscosity under wide temperature ranges; reduces galling in upper bearings and minimizes martensitic streaking in landing gear outer cylinders.
- Load-bearing relevance: Optimized for the dynamic loads of landing gear operations, ensuring smooth extension and retraction under full aircraft weight.
- Compatibility: Works with standard shock strut materials including seals, hoses and metals. Avoid contamination with synthetic or phosphate-ester hydraulic fluids.
Approvals & Specifications for CASTROL-AERO-40-YELLOW
- Boeing: BMS 3-32C Type II approved.
- Military / Federal: Meets MIL-H-5606 requirements.
- Other OEMs: Widely accepted by commercial and military platforms. Cross-reference with Airbus, Lockheed Martin and other OEM approved materials lists for platform-specific compliance.
Typical Aircraft MRO / AOG Applications for CASTROL-AERO-40-YELLOW
- Landing Gear Maintenance: Used during overhauls, routine servicing and pre-flight checks.
- AOG Repairs: Critical for on-wing shock strut repairs to restore aircraft quickly to service.
- Stocking Importance: Prevents flight delays by allowing rapid response to landing gear issues. Reduces risk of extended downtime during urgent AOG situations.
Compatibility & Safety Notes for CASTROL-AERO-40-YELLOW
- Material Compatibility: Compatible with standard landing gear seals, hoses and structural metals.
- Practicality for MRO / AOG: Self-contained 5?gal (18.93?L) can allows easy storage and quick access for ground crew, lightweight and manageable in hangar or ramp conditions.
- Safety Notes: Store in cool, dry conditions; avoid mixing with non-compatible fluids to maintain hydraulic performance.
Packaging & Procurement for CASTROL-AERO-40-YELLOW (matched to the Aerospheres page and common market packs)
- Weight: 21.77?kg (48?lbs.).
- Stocking: Suitable for MRO stock bins, AOG kits or consignment stock.
- Procurement Tips: Track both Aerospheres P/N (101503) and 3M OEM P/N (14D1BF) for traceability in ERP/MRP systems, reorder proactively for AOG readiness.
Why CASTROL-AERO-40-YELLOW is Chosen for AOG / MRO
- Provides reliable damping and shock absorption under all operational conditions.
- Fast, safe on-wing application reduces aircraft downtime.
- Trusted across aviation industry for both commercial and military aircraft.
- Compact, manageable packaging for quick deployment by ground crew.
Practical Suggestions for Your Team (AOG mindset) for AeroShell Grease 22
- Keep at least one 5?gal (18.93?L) can in each AOG kit.
- Train ground crew and MRO teams in proper shock strut fluid replacement and handling.
- Maintain clear labelling with part numbers and OEM specifications for traceability.
- Store in a cool, dry hangar or maintenance bay for rapid access during urgent repairs.
Manufacture / Aviation Spec Codes for CASTROL-AERO-40-YELLOW
- 3M / Castrol OEM Part Number: 14D1BF
- Boeing: BMS 3-32C Type II
- Military / Federal: MIL-H-5606
- Airbus / Lockheed Martin / OEM: Check aircraft-specific approved materials lists for platform-specific approval
Alternative Names & Descriptions for CASTROL-AERO-40-YELLOW
- Castrol Aero 40
- Aero 40 Yellow Hydraulic Fluid
- Aircraft Shock Strut Fluid
- BMS 3-32C Type II Fluid
- CASTROL AERO 40 5USG
- BMS5-127 TYPE 2
- BMS3-32C TYPE II
Restrictions
Recommended Alternatives
Shipping Information
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