VM-4 oil (TU 38.401-58-3-90) is the working fluid for high-performance steam-oil booster, auxiliary steam-jet, and special forevacuum pumps, as well as for mechanical vacuum pumps with oil sealing. The range of working fluids for vacuum-creating equipment includes well-refined mineral (oil) and some synthetic products, referred to as vacuum oils. Due to the specific operating conditions of vacuum-creating equipment, the main parameters of vacuum oils are viscosity, saturated vapor pressure, ultimate residual pressure, and oxidation stability.
VM-4
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View:
Vacuum
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Normative document:
TU 38.401-58-3-90 with amendments 1-6
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Packaging:
Barrel 216,5l
Can 15kg
Description
Characteristics
Application
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Indicator Name
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Norm by Specification
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1
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Density,<br>
- at 20°C, kg/m3<br>
- at 15°C, kg/m3
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≤908<br>
≤911.4
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2
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Color on CNT colorimeter, CNT units
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≤7.0
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3
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Kinematic viscosity, mm²/s,<br>
- at 50°C<br>
- at 100°C
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48-57<br>
8-11
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4
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Flash point in a closed cup, °C
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≥205
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5
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Pour point, °C
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≤-15
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6
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Acid number, mg KOH per 1 g of oil
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≤0.2
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7
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Coking, %
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≤0.2
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8
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Water content, %
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Absence
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9
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Vapor pressure at 20°C, Pa
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≤5.3x10-3
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10
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Fractional composition of the oil<br>
- boiling point, °C<br>
- 90% of oil distilled at temperature, °C
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≥370<br>
≥515
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Used as a lubricating oil and as a sealant for piston vacuum pumps.
