Royco 782: Fire-Resistant Hydraulic Fluid for Military and Aerospace Systems
Modern aircraft rely heavily on hydraulic systems to perform the heaviest jobs on the airplane. There are so many severe duty applications requiring reliable hydraulic fluid with extreme pressure performance on all aircraft, especially military aircraft, and Royco 782 is one of the most common synthetic hydrocarbon base fluids on the market and is commonly used by the Air Force, many commercial aircraft, and meets a common military specification.
Greenwood Aerospace is proud to offer Royco 782 in several different quantities. Let’s take a look at Royco 782 and what it offers.
What is Royco 782?
Royco 782 is a synthetic, fire-resistant hydraulic fluid for high-performance military and aerospace applications. It’s based on a synthetic ester and has an additive package for thermal stability and wear resistance.
The hydraulic system is the system that powers the landing gear, along with most other major aircraft systems, including ordnance systems on tactical aircraft. Royco 782 is designed to provide long service intervals and high levels of corrosion inhibition to aviation platforms and aircraft systems.
MIL-PRF-83282: The Standard for Military Hydraulic Fluids
Royco 782 is qualified to MIL-PRF-83282, the spec for fire-resistant hydraulic fluids used in aircraft and ground support systems. This spec replaced MIL-H-83282 and guarantees compatibility with seals, gaskets, and system materials.
When fire resistance is required, military and commercial aircraft hydraulic systems use MIL-PRF-83282D and its civilian equivalent. Heavy aircraft use hydraulics to move their landing gear, flaps, and stabilizers, so they run big systems that use a lot of fluid.
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It can also be used in hydraulic struts, brakes, shock absorbers, autopilots, flight control systems, and other systems that use synthetic elastomer seals, which are commonly used for most big aircraft. If the technical spec allows MIL-PRF-83282, it can be used in flap control mechanisms, air compressor gears, and other hydraulic systems.
Where Royco 782 Is Used
This fluid is used in aircraft hydraulic systems, missile systems, armored vehicles, and other military equipment that operate in extreme temperature environments. Its wide temperature range and fire resistance make it ideal for high-risk applications.
However, it is primarily a petroleum-based hydraulic fluid that holds up well to high temperature operation and high pressure, although it is also suitable for unpressurized systems. It can also be used in heavy-duty construction equipment, which makes sense; hydraulics do not change much between aircraft and non-flying functions. There are few areas of the world more severe than flight, and corrosion
Key Features of Royco 782
Royco 782 is a red-colored, synthetic, fire-resistant hydraulic fluid designed for extreme performance in harsh environments. As a “super clean” formulation ROYCO®, ROYCO® is trusted in military aviation and aerospace systems where fire resistance, wear protection, and thermal stability are critical.
For Demanding Applications
Used in military aircraft hydraulic systems and high-performance ground-based equipment, Royco 782 operates in wide temperature ranges. It runs reliably in sub-zero temperatures and extreme heat, making it perfect for:
- Military and aerospace hydraulic systems
- Defense ground support equipment
- Environments with fire hazard risk
Performance You Can Count On
Royco 782 meets or exceeds military and aerospace specifications, so you can count on it to perform when it matters most. Its synthetic base provides:
- Fire resistance with high flash and fire points
- Low pour point for cold-weather performance
- 72-hour stability at -40°C proven in testing
- Excellent wear protection verified in 4-ball wear testing
- Foam resistance and excellent fluid cleanliness for extended equipment life
Why Royco 782
In addition to meeting military specs, Royco 782 is designed to reduce oxidation, prevent corrosion, and extend fluid service life. Its advanced additive package ensures system cleanliness and compatibility with modern aerospace materials.
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Buying Royco 782 for Government Applications
Royco 782 is on GSA Advantage and through DLA supply chains. Government buyers should verify the NSN and ensure the product meets the current MIL-PRF. When you partner with Greenwood Aerospace, you know you will be getting the right product at the right price at the right time.