7-50c-3
GOST 20734-75
The 7-50C-3 oil is a blend of polysiloxane fluid and organic ester with an antiwear additive and oxidation inhibitors.
7-50C-3 is used in military aircraft hydraulic systems (including those of MiG-25 and MiG-29).
| Index name | Norm |
|---|---|
| Kinematic viscosity, mm2/с (cSt): | |
| at 200°С, min. | 1,3 |
| at 20°С, min. | 22 |
| at minus 60°С, max. | 4200 |
| Acid number, mg KOH/g, max. | 0,1 |
| Open flash point, °C, min. | 200 |
| Pour point, °C, max. | -70 |
| Density at 20°C, kg/m3, max. | 930-940 |
