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Pro Torr 19 Vacuum Pump Oil , Five Gallon 20.61900.50


SKU: 20.61900.50

Additional information

Weight 44 lbs
Dimensions 10 × 10 × 14 in


A-VAC’s Pro-Torr 19 is our recommended general purpose hydrocarbon fluid for mechanical vacuum pumps used in non-corrosive applications. The manufacturing process includes molecular distillation, which removes light end fractions present in the fluid and gives it the desired properties of lower vapor pressures, reduced backstreaming, and longer fluid life. Therefore, it can be used within the same applications as more expensive oils which would otherwise be contaminated by a vacuum oil of lower grade.

A durable, long-lasting mechanical pump fluid, Pro-Torr 19 is cost-effective in vacuum applications such as mass spectrometers, electron microscopes, thin film sputtering, UHV systems, and freeze dry systems. Proper use of this oil effects reduced maintenance costs, improved pumping cycles, and a cleaner vacuum system.

Works great in both rotary vane and rotary piston pumps. Provides good sealing, lubricity and ultimate vacuum.

We recommend it for outstanding performance in Welch, Pfeiffer Alcatel Adixen, Leybold, Edwards, Agilent Varian, Atlas Copco , Kinney, Vacuubrand, Airtech  and most major brands of vacuum pumps.


  • Molecularly distilled
  • Reduced backstreaming
  • Increased fluid life
  • Low vapor pressure

Suggested Applications

  • Instrumentation
  • Botanical Extractions
  • Nitride deposition
  • Ion implantation
  • Sputtering
  • Biomedical processes
  • Leak detection
  • Freeze drying
  • Mass spectrometry

Vapor Pressure at 25 degrees C (torr) 1 x 10-5

Boiling Point at .01 torr (Degrees C) 112

Viscosity at 40 Degrees C (cSt) 55

Pour Point(Degrees C) -15

Flash Point (Degrees C) 213

Fire Point (Degrees C) 244

Density at 25 Degrees C (g/ml) .87


Click Below for SDS Sheet

19 Pro-Torr Vacuum Pump Fluid