What is Skydrol hydraulic fluid?
Skydrol is a hydraulic fluid that is a formulated package of chemical additives dissolved into a fire-resistant phosphate ester base stock. The additives serve different functions such as inhibiting corrosion, boosting viscosity, and preventing erosion damage to servo valves.
Which of the following seals is not compatible with Skydrol?
Petroleum oil hydraulic system seals of neoprene or Buna-N are not compatible with Skydrol® and must be replaced with seals of butyl rubber or ethylene-propylene elastoiners.
What color is Skydrol?
Purple color
Skydrol Hydraulic Fluid – Purple color. Skydrol is a fire-resistant aviation hydraulic fluid manufactured by Solutia (now part of Eastman Chemical Company), and formerly manufactured by Monsanto.
What is the viscosity of Skydrol?
Skydrol® 500B-4 Viscosity in cSt at 210 °F/99 °C 3.66-4.00 3.68-4.00 at 100 °F/38 °C 10.65-11.65 11.4-12.4 at -65 °F/-54 °C 2000 max.
Is skydrol corrosive?
Skydrol is made of a fire-resistant phosphate ester base stock, with a number of oil additives dissolved into it to inhibit corrosion and prevent erosion damage to servo valves. It also includes a purple or green dye to ease identification.
What seals are used with skydrol?
Seals for systems that use MIl-H-5606 are made of neoprene or Buna-N. Seals for Skydrol® are made from butyl rubber or ethylene-propylene elastomers.
Is Skydrol still used?
It has been approved by most airframe manufacturers including Airbus, Boeing and BAE Systems and has been used in their products for over 40 years.
What seals are used with Skydrol?
Is skydrol an oil?
“Skydrol” is the trade name for a phosphate ester hydraulic fluid used on aircraft. Douglas developed it in the 1940’s, Monsanto in the USA manufactured it for years and more recently Eastman took the product into their portfolio. If you see some, it is a thin purple oil.
Is PTFE compatible with Skydrol?
Modern Skydrol compatible seals are usually made from EPDM (ethylene propylene diene monomer) or PTFE (polytetrafluroethylene).
What happens if you inhale Skydrol?
Health Hazards Inhalation: None known. Eye contact: Eye may become red, tear, and become painful. substance which may provoke an allergic reaction among sensitive individuals in contact with skin.
Is Skydrol toxic?
The usual hydraulic fluid, Skydrol, is poisonous. If it makes it to the air conditioning system, it causes fume events that may have adverse health effects up to and including at least one fatality.