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Klüber Klüberalfa GR Y VAC 2
High-temperature paste
Application Klüber Klüberalfa GR Y VAC 2
Klüberalfa GR Y VAC are preferred greases for applications under vacuum, e.g. in components of the electro-mechanical industry. Behaviour 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.
Performance, Features & Benefits of Klüber Klüberalfa GR Y VAC 2 are:
- Low evaporation under vacuum conditions
- High thermal stability
- Good resistance to aggressive media
- Neutral towards plastic materials
If you have any questions, please contact OlieOnline Technical Helpdesk
Product Description Klüber Klüberalfa GR Y VAC 2
Klüberalfa GR Y VAC greases are white, homogeneous longterm 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.
Typical Characteristics
| Product specifications | Method |
Klüber Klüberalfa GR Y VAC 2 |
|
| Article number | 090189 | ||
| NLGI grade | DIN 51818 | 2 | |
| 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 | ||
| Colour space | white | ||
| Texture | homogeneous | ||
| Density at | 20 °C | approx. 1.9 g/cm³ | |
| Worked penetration, lower limit value | 25 °C | DIN ISO 2137 | 265 x 0.1 mm |
| Worked penetration, upper limit value | 25 °C | DIN ISO 2137 | 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, frostfree place and in the unopened original container, approx. | 60 months |
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.
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