TU 38.1011187-88, amendment 1-4

VM-1s - is applied as working liquid in high-vacuum paromaslyany pumps, in mechanical vacuum pumps with oil consolidation. The most important indicators for operation of VM-1 oils and VM-1s are viscosity, boiling temperature with a residual pressure of 0,01 mm hg, pressure of saturated steam at 20 °C. VM-1 oil and VM-1s - is interchanged.

Index nameNorm
Kinematic viscosity mm2 /s  
- At 20°С 60-70
- At 100°С -
Acid number, mg КОН / g, not more than 0,2
Temperature, °С:  
- Open cup flash point, °С, not less than 230
- Pour point, not more than -12
Color, CNT units, not more than 0,5
Fractional composition of oil, °С:  
- Temperature of the beginning of the distillation, not less than -
- 90% of the oil distilled at a temperature not higher than -
- The end of the boil, not more than -
Vapor pressure at 20°С, Pa, not more than 5,3·10-6
Density at 20°С, kg/m3, not more than 900


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