Castrol Brayco™ Micronic 756 is a petroleum base, low viscosity, red coloured ISO grade 15 hydraulic fluid for aircraft, missile and ordnance use. It blends highly refined base stocks with suitable additives to give exceptionally good viscosity-temperature characteristics, good anti-wear properties, low rubber swell and excellent oxidation stability; a low molecular weight polymeric viscosity index improver provides stability. It is designed for aircraft, missile and ordnance hydraulic systems where long term stability and a low temperature fluid are required, including automatic pilots, shock absorbers, brakes, flap-control mechanisms and missile hydraulic servo-controlled systems. It is filtered to meet rigid particle contaminant requirements. Service temperature is −54 to 135 °C. It meets MIL-PRF-5606K (2006 TDS in Odoo: MIL-PRF-5606H); NATO code H-515, military symbol OHA.
Typical Properties
- Specific gravity (15 °C) 0.87; viscosity index 367
- Kinematic viscosity: 5.1 cSt at 100 °C, 13.5 cSt at 40 °C, 487 cSt at −40 °C, 2275 cSt at −54 °C
- Pour point −60 °C; flash point (PMCC) 96 °C; acid number 0.03 mg KOH/g
- Rubber swell (L, Buna N) 28%; evaporation (71 °C, 6 hours) 9.6%; water 36 ppm
- Passes 72 hour low temperature stability at −54 °C and 168 hour corrosion-oxidation test at 135 °C
Packaging
- 55 gallon drums, 5 gallon pails, 6 × 1 gallon and 24 × 1 quart cases
| Packing | 1 QT or 1 USG or 5 USG or 55 USG |