Klüberalfa GR Y VAC 2 Special greases for vacuum applications 100g

Klüberalfa GR Y VAC 2 - Special greases for vacuum applications

Description
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.

Benefits for your application

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

Application
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.

Technical specifications

Product data	Klüberalfa GR Y VAC 1	Klüberalfa GR Y VAC 2	Klüberalfa GR Y VAC 3
Article number	90188	90189	90190
NLGI grade, DIN 51818		2	3
Chemical composition, type of oil	PFPE	PFPE	PFPE
Chemical composition, solid lubricant	PTFE	PTFE	PTFE
Lower service temperature	-20 °C / -4 °F	-20 °C / -4 °F	-20 °C / -4 °F
Upper service temperature	250 °C / 482 °F	250 °C / 482 °F	250 °C / 482 °F
Colour space	white	white	white
Texture	homogeneous	homogeneous	homogeneous
Density at 20 °C	approx. 1.94 g/cm³	approx. 1.9 g/cm³	approx. 1.99 g/cm³
Worked penetration, DIN ISO 2137, 25 °C, lower limit value	310 x 0.1 mm	265 x 0.1 mm	220 x 0.1 mm
Worked penetration, DIN ISO 2137, 25 °C, upper limit value	340 x 0.1 mm	295 x 0.1 mm	250 x 0.1 mm
Oil separation, based on ASTM D 6184 [FTMS 791 C 321], after 30 h/200 °C	<= 14 % by weight	<= 12 % by weight	<= 10 % by weight
Evaporation loss, ASTM D 2595 22h/204°C	<= 1 % by weight	<= 1 % by weight	<= 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	60 months	60 months

 

Information on product safety (Manufacturer, Contact)

KLÜBER LUBRICATION MÜNCHEN GMBH & CO. KG, Geisenhausenerstraße 7, 81379 München, GERMANY, +49 89 7876 0, [email protected], www.klueber.com