Bl This standard establishes the characteristics and test methods of the fluid used primarily as a power transmitter in the hydraulic mechanisms of various parts of aircraft, such as landing gear, tail and moving parts in general and also as hydraulic fluid for instruments. respective, such as compasses, where it is in contact with synthetic rubber gaskets. B-2 This fluid should not be used on aircraft parts where it may come into contact with natural rubber.
IRAM 6572-1958 history
1958IRAM 6572-1958 Aviation products. Fluids for hydraulic equipment in direct contact with compound rubber