geminYe Inert PFPE Mechanical Pump Oil

geminYe Inert PFPE Mechanical Pump Oil

geminYe® perfluoropolyether (PFPE) family of lubricants are non-flammable, chemically inert, and thermally stable. geminYe PFPE mechanical fluid oils have excellent lubricity properties and are available in viscosity grades suitable for use in all vacuum pumps. When used with proper filtration, geminYe fluids provide exceptionally long service life. A drop-in replacement and direct equivalent to other PFPE brand vacuum oils, geminYe fluids are completely miscible with Fomblin®, Krytox®, and other brand inert PFPE fluids of the same grade.

geminYe® LV Inert Vacuum Pump Fluids

geminYe LV is an inert perfluorinated fluid mixture with a hexafluoropropylene base. Because the chemical chain contains only carbon, fluorine, and oxygen, it exhibits excellent physical properties, including excellent lubricity and minimal backstreaming.

geminYe® RP Inert Vacuum Pump Fluids

geminYe RP incorporates an antirust additive which enables the fluid to withstand even the harshest chemical environments. The additive allows for greatly reduced or eliminated corrosion, thus providing a cleaner vacuum operation and decreased maintenance costs.

geminYe® SV Inert Vacuum Pump Fluids

geminYe SV is an advanced inert perfluorinated fluid with a backstreaming rate of virtually zero, allowing for an ultra clean vacuum. This fluid offers excellent performance in dry etcher and CVD applications without the need to invest in dry pump technology.


  • Low vapor pressure
  • Oxygen compatible
  • Non-flammable
  • Solvent resistant
  • Low relative weight loss
  • Chemically inert
  • Excellent compatibility with metals, plastics, elastomers


  • CFC-free & Ozone friendly
  • Corrosion resistant
  • High thermal stability
  • High dielectric properties
  • No flash or fire point
  • Reclaimable
  • Made in the USA





  • Semiconductors
  • Chemical pumping (lewis acids)
  • Oxygen pumping (geminYe LV and RP)
  • LPCVD
  • Reactive ion etching
  • Plasma etching



geminYe LV Grades
Typical PropertygeminYe 06geminYe 14geminYe 16geminYe 25
Specific gravity at 20ºC (g/cm3)1.881.891.891.90
Kinematic viscosity at 20ºC (cSt)62142168261
Pour point (ºC)-60-54-45-48
Vapor pressure at 20ºC (torr)4x10-72x10-72x10-71x10-7
Flash Point (ºC)nonenonenonenone
Fire Point (ºC)nonenonenonenone

geminYe RP Grades

Typical PropertygeminYe 06 RPgeminYe 14 RPgeminYe 16 RPgeminYe 25 RP
Boiling Point (ºC)>270>270>270>270
Viscosity at 20ºC (cSt)73165165290
Vapor pressure at 20ºC (torr)5x10-64x10-74x10-74x10-7
Flash Point (ºC)NoneNoneNoneNone
Density (g/ml)1.881.891.891.90

geminYe SV Grades

Typical PropertySVSVRP  
Specific gravity at 20ºC (g/cm3)1.901.90
Kinematic viscosity at 20ºC (cSt)200200
Pour point (ºC)-38-38
Vapor pressure at 20ºC (torr)5x10-95x10-9
Flash Point (ºC)nonenone
Fire Point (ºC)nonenone

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