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Klüberalfa GR Y VAC 2 Vacuum Grease –
Temp Range (-20 to +250 (°C))

Special greases for vacuum applications


Klüberalfa GR Y VAC greases are white, homogeneous long-term greases based on perfluorinated polyether (PFPE) oils and polytetrafluoroethylene (PTFE) thickener. Besides their good resistance to high temperature and aggressive media, Klüberalfa GR Y VAC greases show low evaporation under vacuum conditions.

Klüberalfa GR Y VAC greases are made in three different NLGI classes, allowing component-specific selection for lifetime lubrication.


  • Low evaporation under vacuum conditions
  • High thermal stability
  • Good resistance to aggressive media
  • Neutral towards plastic materials


Klüberalfa GR Y VAC are preferred greases for applications under vacuum, e.g. in components of the electro-mechanical industry.

Further application examples are:

  • Linear guides in cleanrooms
  • Semiconductor technology
  • Lubrication of seals

Behavior towards elastomers and plastics

Lubricants based on perfluorinated polyether oils and polytetrafluoroethylene are generally regarded as neutral towards most elastomers and plastics (exception: perfluorinated rubber). Nevertheless we recommend testing compatibility with the material to be used, especially prior to series application.

Application Notes

For optimum lubrication results, we recommend cleaning the friction points with white spirit 180/210 followed by Klüberalfa XZ 3-1. Then blow the surfaces with clean, dry compressed air or hot air to remove solvent residues. For initial lubrication, the friction points must be clean and bright, i.e. free from oil, grease and perspiration. Klüberalfa GR Y VAC greases are applied directly or by means of brush, spatula or lubricant dispenser.

The technical sales departments at Klüber Lubrication may be contacted at any time for advice to ensure optimum service life results.


Product data Klüberalfa GR Y VAC 2
Article number 090189
Chemical composition, type of oil PFPE
Chemical composition, solid lubricant PTFE
Lower service temperature -20°C / -4°F
Upper service temperature 250°C / 482°F
Color space white
Texture homogeneous
Vapor Pressure (Torr) 20°C (Torr): 4.8x10-13
Density at 20°C approx. 1.9 g/cm3
NLGI grade, DIN 51818 2
Worked penetration, DIN ISO 2137, 25°C, lower limit value 265 x 0.1 mm
Worked penetration, DIN ISO 2137, 25°C, upper limit value 295 x 0.1 mm
Oil separation, based on ASTM D 6184 [FTMS 791 C 321], after 30 h/200 °C <= 12 % by weight
Evaporation loss, ASTM D 2595 22h/204°C <= 1 % by weight
Minimum shelf life from the date of manufacture - in a dry, frost-free place and in the unopened original container, approx. 60 months

Shelf Life

It is strongly recommended using all fluids and greases at the time of receipt, however when storage is necessary, rotate older stock into use first and observe the recommended parameters listed below.

Klüber Grease

Shelf Life of Klüber Grease is a minimum of 5 years; in this case although there won't be problems in terms of chemical stability there can be oil separation over time, which is normal.

About Klüber Lubrication München SE & Co. KG

Klüber Lubrication is one of the world's leading manufacturers of specialty lubricants, offering high-end tribological solutions to virtually all industries and markets worldwide. Most products are developed and made to specific customer requirements. During its more than 80 years of existence, Klüber Lubrication has provided high-quality lubricants, thorough consultation and extensive services, which has earned it an excellent reputation in the market. The company holds all common industrial certifications and operates a test bay hardly rivalled in the lubricants industry.

Klüber Lubrication, set up as a retail company for mineral oil products in Munich in 1929, is today part of Freudenberg Chemical Specialities SE & Co. KG, a Business Group of the Freudenberg Group, Weinheim. Klüber Lubrication has about 2.000 employees in more than 30 countries.

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Ordering Table

All dimensions listed below, unless otherwise stated, are in grams.

Description Grade Size Safety Data Sheet Part Number Price In Stock Add To Cart
Description Grade Size Safety Data Sheet Part Number Price In Stock Add To Cart
GREASE, PFPE, VAC2, 100 GRAM TUBE Klüberalfa GR Y VAC 2 PFPE Vacuum Grease 100 g Tube SDS for KLY02F KLY02F $167.00 Contact KJLC for Availability
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Temp Range (-20 to +250 (°C))