Vacuum oil VM-1 according to TU 38.401-58-3-90, is used as a working fluid in fore-vacuum piston pumps. Due to the high degree of purification of the base of vacuum oil, the VM-1 vacuum oil is characterized by a narrow fractional composition, low volatility, and high stability against oxidation.
Application area
Vacuum oil VM-1 is used in high-performance piston vacuum pumps AVZ, NVZ. Permissible use in mechanical vacuum pumps with oil seal.
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 plus 50 ° С |
60-70 |
| Flash point, determined in an open crucible, ° С, in the range of |
230-260 |
| Pour point, ° C, not higher than |
-12 |
| The boiling point at which the vapor pressure is 1.33 Pa (1 × 10-2 mm Hg), ° C, within |
140-150
|