Vacuum oil VM-5 is used as a working fluid in high-vacuum steam jet pumps, which operate at a residual pressure of 1 • 10−3 to 1 • 10−7 mm RT. Art.
Application area
Vacuum oil VM-5 is used as a working fluid in high-vacuum steam-oil pumps (providing lower residual pressure in vacuum systems compared to vacuum oils VM-1 and VM-1C), as well as, in some cases, in mechanical pumps with oil seal mating parts.
Benefits
- Improves sealing of working chambers;
- Reduces friction power loss;
- Optimum viscosity for each specific case;
- Sufficiently low saturated vapor pressure (oil evaporation and the degree of vacuum achieved depend on it);
- Environmental Safety;
- High hydrolytic stability during evacuation of vapors and air;
- Low gas solubility.
Specifications
| Name of indicator |
Norm |
| Kinematic viscosity, mm2 / s: at 50 ° С |
60-74 |
| Acid number, mg KOH / g, not more than |
0,2 |
| Temperature, ° С: flashes in an open crucible, not lower than |
230 |
| Temperature, ° С: solidification, not higher than |
-12 |
| Density at 20 ° С, kg / m3, no more than |
900 |