SPEC: MIL-PRF-5606HCastrol Brayco Micronic 756 is a petroleum base, low viscosity, red colored ISO Grade 15 hydraulic fluid for aircraft, missile and ordnance use. It is a blend of highly refined, selected base stocks with suitable additives, which yield a product with exceptionally good viscosity-temperature characteristics, good an ti-wear properties, low rubber swell, and excellent oxidation stability. The use of a polymeric viscosity index improver of low molecularweight provides stability in comparison to typical hydraulic fluids.Brayco Micronic 756 is designed for use in aircraft, missile, and ordnance hydraulic systems where long term stability and a low temperature fluid is required. Brayco Micronic 756 is filtered to meet rigid particle contaminant requirements. It is intended for use in automatic pilots, shock absorbers, brakes, flap-control mechanisms, missile hydraulic servo-controlled systems and other hydraulic systems using synthetic sealing materials. Fluids compounded to meet this specification undergo certain changes with use. Further information relative to usable life may be found in Fainman and Mackenzie, "The Characteristics and Performance of Specification MIL-H-5606 Hydraulic Fluid," Lubrication Engineering 22234 (1966).
