PJi is your complete source for Skydrol aviation hydraulic fluid, including Skydrol 500B-4. This popular hydraulic fluid used in aircraft is available in a variety of sizes, including quarts, gallons, and drums.
Made by Eastman, Skydrol is a phosphate ester-based hydraulic fluid that’s highly resistant to fire and performs well in extreme temperatures, making it the ideal aviation hydraulic fluid.
With your PJi account, you can easily order Skydrol hydraulic fluid online and take advantage of same-day shipping for in-stock fluids. If you need help finding the right hydraulic fluid for your aircraft, our aviation specialists will be happy to assist you.
Skydrol 500B-4 offers a number of advantages over other types of hydraulic fluids. The most worker-friendly of the aviation phosphate esters, it is the least irritating to the skin and less prone to form mists which can irritate the respiratory tract.
In addition to its fire-resistant properties and performance in extreme temperatures, Skydrol 500B-4 hydraulic fluid also offers improved erosion resistance, as it contains the same anti-erosion additive and acid scavenger as Skydrol LD-4.
Skydrol 500B-4 hydraulic fluid is widely used in a variety of aviation applications, including: