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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 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.
|Average molecular weight||2800||3400||4100||6600|
|Specific Gravity at 20ºC (g/cm3)||1.89||1.90||1.91||1.92|
|Flash Point (ºC)||None||None||None||None|
|Kinematic viscosity at 20ºC (cSt)||190||285||474||1508|
|Pour Point (ºC)||-42||-35||-32||-23|
|Refractive index, n20D at 20ºC (ºC)||1.300||1.300||1.301||1.304|
|Specific Heat at 38ºC (cal/g)||0.24||0.24||0.24||0.24|
|Surface Tension at 25ºC (dyne/cm)||20||20||20||20|
|Heat of vaporization at 200ºC (cal/g)||9||7||7||5|