Klüber BARRIERTA I MI-202 High-temperature long-term grease 180g can

High-temperature greases with good long-term characteristics

• Service temperature range: -45°C to + 240°C
• high-quality brand of hightemperature lubricants based on perfluorinated polyether oil (PFPE)
• made using particularly fine PTFE thickeners and have an oil content that is unusually high for this type of grease
• Colour: white
• Content: 180g can
• also available as: can: 1kg

Benefits for your application
+ Long-term availability and service life of component

• over a wide service temperature range up to 260°C
• when exposed to aggressive chemical agents and vapours
• when using sensitive plastic materials

+ Tried and tested over many years in numerous industries and component types

• due to BARRIERTA base oils, which are made specifically to enable long-term stability
• backed by a large number of approvals and references

Application

• rolling and plain bearings operating at elevated temperature: long service lives when used in rolling and plain  bearings operating under high thermal stress; smooth running of bearings also at high speeds and ensure a long life of the lubricated components; film stretchers, textile stenter frames, precision engineering, clean-room engineering (e.g. microchip manufacture)
• ultra-high vacuum application due to low vapour pressures
• electrical contacts: long-term lubrication of electrical contacts in high and medium-voltage switchboards
• widely neutral towards elastomers and plastics (possible exception: highly fluorinated rubber)

BARRIERTA is Europe's oldest high-quality brand of high-temperature lubricants based on perfluorinated polyether oil (PFPE).

BARRIERTA products are among the most widely used PFPE lubricants today.

High-temperature greases of the BARRIERTA I series are made using particularly fine PTFE thickeners and have an oil content that is unusually high for this type of grease.

To suit various application purposes, BARRIERTA I greases are available in four different viscosities.

Technical Specifications

Chemical composition, solid lubricant	PTFE
Chemical composition, type of oil	PFPE
Lower service temperature	-45 °C / -49 °F
Upper service temperature	240 °C / 464 °F
Colour space	white
Density at 20 °C	approx. 1.95 g/cm³
NLGI grade, DIN 51818	2
Kinematic viscosity of the base oil, DIN 51562 pt. 01/ ASTM D-445/ASTM D 7042, 40 °C	approx. 200 mm²/s
Kinematic viscosity of the base oil, DIN 51562 pt. 01/ ASTM D-445/ASTM D 7042, 100 °C	approx. 22 mm²/s
Shear viscosity at 25 °C, shear rate 300 s-1, equipment: rotational viscometer, lower limit value	4 000 mPas
Shear viscosity at 25°C, shear rate 300 s-1, equipment:rotational viscometer, upper limit value	7 000 mPas
Corrosion inhibiting properties of lubricating greases, DIN 51802, (SKF-EMCOR), test duration: 1 week, distilled water	<= 1 corrosion degree
Corrosion inhibiting properties of lubricating greases, DIN 51802, (SKF-EMCOR), test duration: 1  distilled water	<= 1 corrosion degree
Flow pressure of lubricating greases, DIN 51805, test temperature: -40 °C
Flow pressure of lubricating greases, DIN 51805, test temperature:-45 °C	<= 1 400 mbar
Flow pressure of lubricating greases, DIN 51805-2, test temperature: -50 °C
Four-ball tester, welding load, DIN 51350 pt. 04	approx. 5 000 N
Speed factor (n x dm)	approx. 600 000 mm/min
Minimum shelf life from the date of manufacture - in dry, frost-free place and in the unopened original container, approx.	60 months