Chemours Krytox® XHT-AC PFPE Grease

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Chemours Krytox® XHT-AC PFPE Grease
Categories:	Fluid; Lubricant; Perfluoropolyether (PFPE); PTFE Gellant
Material Notes:	The Krytox® XHT-AC series greases are an extension of the Krytox® 240 series and Krytox® GPL 22X series but are designed to give higher performance in the 204–302 °C (400–575 °F) ranges. Krytox® XHT-AC series greases contain sodium nitrite to offer anti-corrosion performance. These greases should be used below 320 °C (608 °F), where the PTFE thickener could begin to melt. The base oil is an extremely viscous oil that provides good viscosity and lower evaporation at high temperatures. Chemours was formed from former DuPont performance chemicals businesses, including DuPont Performance Lubricants, in 2015.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.99 g/cc @Temperature 0.000 °C	1.99 g/cc @Temperature 32.0 °F
Volatiles	<= 1.0 % @Temperature 204 °C, Time 79200 sec	<= 1.0 % @Temperature 399 °F, Time 22.0 hour
Viscosity Measurement	149	149	Base Oil Viscosity Index
Kinematic Viscosity	1712 cSt @Temperature 20.0 °C	1712 cSt @Temperature 68.0 °F	Base Oil
Kinematic Viscosity at 40°C (104°F)	500 cSt	500 cSt	Base Oil
Kinematic Viscosity at 100°C (212°F)	47 cSt	47 cSt	Base Oil

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	300 °C	572 °F
Minimum Service Temperature, Air	<= -20.0 °C	<= -4.00 °F
Pour Point	<= -25.0 °C	<= -13.0 °F	Base Oil

Descriptive Properties
Antirust Rating, ASTM D-1743	Passes
Appearance	White, creamy consistency
Food Contact Approval	NSF H-1

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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WDUPJ917 / 162451

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