Eaton AE99111J - Aeroquip 1800 Hose Half -10 (5/8")

The Eaton AE99111J is an Aeroquip 1800 Series Hose Attaching Half, Style I, AN size -10 (5/8"), built for Skydrol and phosphate ester fire-resistant hydraulic fluid service. The stainless steel body and EPR seals with PTFE backup rings make this coupling half chemically resistant to phosphate ester formulations used in commercial airline hydraulic systems. Rated to 3000 PSIG across -65°F to +275°F (-54°C to +135°C).

Skydrol-Service Engineering Features

• EPR seals maintain elasticity and sealing integrity in Skydrol 500B-4 and Skydrol LD-4 environments
• PTFE backup rings prevent seal extrusion during pressure cycling with phosphate ester fluids
• Stainless steel construction provides chemical and corrosion compatibility with Skydrol service
• 5/8-inch bore is optimized for high-demand primary circuit applications for high-demand hydraulic circuits on Skydrol-specification aircraft

The low-profile ratchet lock mechanism — quarter-turn actuation locks the coupling under vibration and pressure cycling with minimal actuation force of the Aeroquip 1800 Series enables tool-free connection for maintenance efficiency. Certified to MIL-C-25427A and AS1709 for aircraft flight controls, landing gear systems, and brake hydraulic circuits. Always confirm fluid compatibility (Skydrol/phosphate ester) before installation — do not substitute petroleum-grade halves in Skydrol service.

Commercial and Military Skydrol Applications

• Commercial airline flight control hydraulic system maintenance access points
• Skydrol-specification aircraft landing gear circuit servicing fittings
• Ground support equipment connections on Skydrol-fluid aircraft
• MRO shop servicing of phosphate ester hydraulic systems (high-demand hydraulic circuits, primary control surfaces, and landing gear retraction systems)