Mobil Vacuum Pump Oil (5 Gal. Pail)

Mobil 104325
5.0000 2 5 0

Mobil Vacuum Pump Oil is a high quality mineral oil that resists deposits and tolerates high vacuums with low evaporation loss. It has a high degree of chemical stability, which is essential characteristic for continuous service. It also has good demulsibility to separate readily from water, which is a common contaminant in vacuum systems. This aids water removal and prevents its return to metal surfaces where it can cause rust and corrosion.

Product Data Sheet

Mobil Vacuum Pump Oil offers the following benefits: 

  • Low volatility characteristics
  • Good air release properties to provide efficient pump operation
  • Good demulsibility to separate quickly from water and resist emulsion formation
  • Good wear protection under start-up and boundary conditions
  • Long service life due to high level of chemical and thermal stability and freedom from deposit formation


The oil is especially formulated for use in vacuum pumps where it will tolerate exposure to very high vacuums with low levels of evaporation. Mobil Vacuum Pump Oil resists the formation of deposits and maintains its original lubricating properties over a long life. It is a dehydrated oil; therefore, keep containers well sealed to prevent contamination by moisture. 

It is also suitable for use in pump bearings and sealing glands.

Mobil Vacuum Pump Oil  
Pour Point, °C (°F), ASTM D97                                            -15 (5)
Flash Point, °C (°F), ASTM D92                                             240 (464)
Kinematic Viscosity, mm2/s, ASTM D445  
at 40°C                                                                             64.0
at 100°C                                                                            8.5
Viscosity Index, ASTM D2270                                             101
Color, Visual                                                                Pale Yellow
5.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Good oil good price
February 15, 2018
7 months ago
works great
acceptable substitute for my vacuum pumps at an acceptable price
May 20, 2018
2 months ago
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The Lubricant Store Store
The price and shipping cost
Lynda M on May 28, 2018
The price and shipping cost
Lynda M on May 28, 2018