PJi is your complete source for Skydrol hydraulic fluid. The gold standard among Type IV hydraulic fluids, Skydrol LD-4 is available in a variety of sizes, including quarts, gallons, and drums.
Made by Eastman, Skydrol LD-4 hydraulic fluid is well-known for its low density, excellent thermal stability, and deposit control. Skydrol LD-4’s unique formula – which has been servicing aircraft for more than 35 years with no change in its chemical makeup – has an anti-erosion additive and acid scavenger that helps reduce valve erosion.
With your PJi account, you can easily order Skydrol aviation hydraulic fluid and enjoy same-day shipping for in-stock fluids. Need help finding the right hydraulic fluid for your aircraft? Our aviation specialists are happy to assist you.
Widely used in commercial and military aircraft, Skydrol LD-4 is designed to provide exceptional performance under extreme conditions and is particularly well-suited for use in aircraft hydraulic systems that operate in high-pressure and high-temperature environments.
One of the primary advantages of Skydrol LD-4 is its excellent resistance to wear and corrosion, which helps prolong the life of hydraulic components. In addition, Skydrol LD-4’s fire-resistant properties offer increased safety in the event of a hydraulic system failure.
Skydrol LD-4 aviation hydraulic fluid is widely used throughout the industry for a variety of applications, including landing gear systems, braking systems, power-assisted flight controls, and thrust reverser systems.
The specific applications of Skydrol LD-4 may vary depending on the aircraft manufacturer’s recommendations and the requirements of the hydraulic systems in different models of aircraft.
No. Fire-resistant, phosphate-ester-based hydraulic fluids like Skydrol do not have a Military Specification (MIL-SPEC).