Inland Semi-synthetic Hydrocarbon Fluid

Inland TW and HVTW

Inland TW® is a semi-synthetic hydrocarbon vacuum oil specifically recommended for applications in rotary vane pumps where exposure to reactive or corrosive gases is prevalent. This product is a distilled hydrocarbon containing no additives. Both unsaturates and aromatics have been removed, resulting in a superior, longer-lasting pump fluid.

Inland HVTW® is also available for use in piston pumps, with the appropriate viscosity necessary. Typical applications include nitride deposition, LPCVD, plasma etching, and ion implantation. When compared to Invoil 20, Inland TW lasts 1.5 to 4 times longer.

Inland ULTRA Fluids

Inland ULTRA® products are semi-synthetic hydrocarbon fluids designed to endure thermal and chemical stresses much better than standard vacuum pump fluids. The ultra-refined process eliminates nitrogen, sulfur, oxygen, and aromatic hydrocarbons, leaving a clear base stock virtually free of impurities.

The additive package will not volatize under thermal stress; the antioxidant will stay in solution and bond up to four times as many radicals as other antioxidants, extending the life of the pump and the fluid.


    Inland TW and HVTW

  • Longest lasting hydrocarbon
  • Corrosion resistant
  • Low vapor pressure
  • USP grade



    Inland ULTRA Fluids

  • Good thermal stability
  • Oxidation resistant
  • Hydrotreated
  • Low vapor pressure
  • Long fluid life




    Inland TW and HVTW

  • Nitride deposition
  • LPCVD
  • Plasma Etching
  • Ion implantation
  • Other corrosive applications



    Inland ULTRA Fluids

  • Mass spectrometry
  • Electron microscopy
  • Thin film sputtering
  • Vacuum distillation and impregnation
  • UHV surface analysis




  • Vacuum furnaces and heat treatment
  • EB welding
  • Vacuum tube evacuation
  • Vacuum metalization
  • Chemical pumping




SpecificationInland TWInland HVTWInland 15 ULTRAInland 19 ULTRAInland 20 ULTRAInland 70 ULTRA
Vapor Pressure at 25ºC (torr)<1x10-6<1x10-7<1x10-6<1x10-6<1x10-7 <1x10-7
Boiling Point at .01 torr  (ºC)158161159166168166
Viscosity at 40ºC (cSt)65106375511072
Pour Point (ºC)-12-12-15-10-9-10
Flash Point (ºC)243249233247252249
Fire Point (ºC)270277
Density at 25ºC (g/ml)0.860.860.860.860.860.86
Colorclearclearclearclearclearclear

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