BM-5 oil (208l).
vacuum oil
Description
Vacuum oil VM-5 used as a working fluid in the high-vacuum vapor jet pumps that operate at a residual pressure of 1 • 10? 3 to 1 • 10? 7 mm Hg. v.
Applications
Vacuum oil VM-5 used as the working fluid in the high-vacuum steam-pumps (providing a low residual pressure in the vacuum system as compared with vacuum oil BM-1 and BM-1C), as well as, in some cases, in mechanical pump with an oil seal between mating parts.
Benefits
-
It improves the sealing of the working chambers;
Reduces power losses due to friction;
The optimum viscosity for each case;
sufficiently low vapor pressure (it depends on the volatility of oil and achievable degree of vacuum);
Environmental security;
High hydrolytic stability evacuated vapor and air;
Small gazorastvorimost.
Specifications
| Indicator | Norm |
|---|---|
| Kinematic viscosity, mm2 /s: at 20 ° C | – |
| Kinematic viscosity mm2 /s: at 50 ° C | 60,0-74,0 |
| Kinematic viscosity, mm2 /s at 100 ° C | – |
| Acid number, mg KOH /g, not more than | 0,2 |
| Temperature, ° C: flare in an open crucible, not lower | +230 |
| Temperature, ° C: pour point not higher than | -12 |
| Color CNT, not more than | 0,5 |
| Fractional composition of oil, ° C: Temperature starting the distillation, not lower | – |
| Fractional composition of oil, ° C 90% distilled oil at a temperature not above | – |
| Vapor pressure at 20 ° C, Pas | not more than 2,7 · 10-5 |
| Density at 20 ° C, kg /m3 and not more than | 900 |
Additional information
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