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All-Union State Standards 16728-78Industrial oil VNII-NP-403 is used as a working liquid for volumetric hydraulics of metal-cutting machines, automatical lines, individual heavy presses and other industrial equipment as well as for circulating greasing systems of metal-cutting machines and other mechanisms.
Guarantee period of storage – 5 years from the day of manufacture.
| Index Name |
VNII-NP-403 |
| Kinematic viscosity at 40°С, mm²/s |
41–51 |
| Viscosity index, not less than |
97 |
| Acid number, mg КОN/g, not more than |
0,7–1,0 |
| Temperature, °С: |
|
| - flash temperature in an open crucible, not lower than |
202 |
| - solidification temperature, not higher than |
−20 |
| Stability against oxidation, not more than: |
|
| - sediment, % |
None |
| - acid number after oxidation, mg КОN/g |
1,30 |
| Fraction of total mass, %, not more than: |
|
| - sulphur |
1,0 |
| - mechanical impurities |
0,007 |
| - water |
Traces |
| - water-soluble acids and alkalis |
None |
| Corrosive influence on metals |
Withstands |
| Colour, units of CNT, not more than |
4 |
| Density at 20°С, kg/m³, not more than |
860–890 |
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