TU 38.401-58-3-90, amendment 1-6

VM-4 oil - is applied as working liquid in forvacuum piston and lamellar and rotor pumps. VM-4 oil represents well purified mineral (oil) oil.

Index nameNorm
Kinematic viscosity mm2 /s  
- At 20°С 48-57
- At 100°С 8-11
Acid number, mg КОН / g, not more than 0,2
Temperature, °С:  
- Open cup flash point, °С, not less than 235
- Pour point, not more than -15
Color, CNT units, not more than 7,0
Fractional composition of oil, °С:  
- Temperature of the beginning of the distillation, not less than 370
- 90% of the oil distilled at a temperature not higher than -
- The end of the boil, not more than 515
Vapor pressure at 20°С, Pa, not more than 5,3·10-3
Density at 20°С, kg/m3, not more than 908


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