Fomblin PFPE Diffusion Pump Fluid

Fomblin® PFPE vacuum pump fluids are non-flammable, chemically inert, and thermally stable. When used with proper pump filtration, Fomblin PFPE vacuum pump oils provide exceptionally long service life. These fluids have excellent lubricity properties and are available in viscosity grades suitable for use in all vacuum pumps.

Fomblin Y HVAC PFPE Diffusion Pump Fluid

Fomblin Y HVAC PFPE diffusion pump fluid was specially developed to provide superior performance in high vacuum applications exposed to aggressive and corrosive compounds. It does not polymerize when exposed to oxygen, ionizing radiation, or accelerated atomic particles. In addition, the fluid can be exposed repeatedly to air without harm while running the pump. Fomblin Y HVAC fluids combine the properties of a narrow molecular weight range and controlled viscosity with an extremely extremely low vapor pressure.

  • Low vapor pressure
  • Non-flammable
  • No flash or fire point
  • Low volatility
  • Low surface tension
  • Low toxicity
  • Excellent compatibility with metals, plastics, and elastomers

  • Chemically inert
  • High thermal stability
  • Good aqueous and non-aqueous solvent resistance
  • High dielectric properties
  • Good radiation stability
  • CFC-free and Ozone friendly
  • Reclaimable

  • Scanning electron and transmission microscopy
  • Mass spectrometry
  • Particle acceleration
  • Ion implantation
  • Plasma and vapor deposition

Typical PropertyY18/8Y25/9Y40/11Y140/13
Average molecular weight2800340041006600
Specific Gravity at 20ºC (g/cm3)1.891.901.911.92
Flash Point (ºC)NoneNoneNoneNone
Kinematic viscosity at 20ºC (cSt)1902854741508
Pour Point (ºC)-42-35-32-23
Refractive index, n20D at 20ºC (ºC)1.3001.3001.3011.304
Specific Heat at 38ºC (cal/g)
Surface Tension at 25ºC (dyne/cm)20202020
Heat of vaporization at 200ºC (cal/g)9775

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