Vacuum Oil VM-4
vacuum oil
Description
Vacuum oil VM 4 – is well refined mineral oil used as the lubricating oil, and as a seal for reciprocating fore pumps. Vacuum oil VM 4 differs narrow fractional composition, low volatility and high stability to oxidation.
Applications
Vacuum oil VM 4 is used as the working fluid in the fore-vacuum reciprocating and rotary vane pumps. Vacuum BM 4 BM oil is replaced by 6-vacuum oil.
Technical Specifications
| Indicator | Norm |
|---|---|
| Density at 20 ° C, g /cm3, not more than | 0,9080 |
| The color units. CNT, not more than | 7,0 |
| Kinematic viscosity mm2 /s: | |
|
at 20 ° C, not more than | – |
|
at 50 ° C | 48-57 |
|
at 100 ° C | 8-11 |
| Flashpoint, ° C: | |
|
COC | – |
|
in a closed crucible, not lower | 205 |
| Acid number, mg KOH /g, not more than | 0,2 |
| Coking ability,%, not more than | 0,20 |
| Pour Point, ° C, max | -15 |
| Stability against oxidation: | |
| Acid number, mg KOH /g, not more than | – |
| increase in viscosity at 50 ° C, not more than | – |
| Fractional composition: | |
|
starting the distillation temperature, ° C, min | 370 |
|
90% oil is distilled at a temperature, ° C, max | 515 |
| Water content,% | The lack |
| Vapor pressure at 20 ° C, Pa, no more than | 5 h10-3 |
Additional information
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