Skydrol™ 500B-4 is a premium phosphate ester-based, fire-resistant aviation hydraulic fluid trusted worldwide for its reliability, performance, and safety. As a standard formulation across the aerospace industry, it is approved by all major aircraft OEMs and delivers exceptional thermal stability, corrosion protection, and oxidation resistance for long-term hydraulic system performance.

Performance highlights include:

• Fire-resistant phosphate ester formulation, ensuring superior safety in high-temperature and high-pressure conditions

• Excellent thermal and oxidative stability, minimizing deposits, sludge, and system wear

• Corrosion and rust protection, safeguarding vital hydraulic components such as pumps, actuators, and valves

• Low-temperature fluidity, providing smooth operation in a wide range of climates

• OEM-approved and field-proven, making it the go-to fluid for commercial and military aircraft maintenance

Packaged in a 5-gallon pail, this size is perfect for aviation MRO facilities, fleet maintenance teams, and aircraft operators requiring a reliable supply of Skydrol’s proven 500B-4 formulation. Designed for superior fire resistance and system cleanliness, Skydrol 500B-4 ensures maximum uptime and safety in aerospace hydraulic systems.