Chemours Krytox® XHT-S PFPE Grease

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Chemours Krytox® XHT-S PFPE Grease
Categories:	Fluid; Lubricant; Perfluoropolyether (PFPE); PTFE Gellant
Material Notes:	The Krytox® XHT-S and XHT-SX grease series is an extension of the Krytox® GPL 240 series and the Krytox® GPL 20X series, but the Krytox® XHT-S and XHT-SX greases are designed to give higher performance in the 204–302 °C (400–575 °F) ranges. The Krytox® XHT-S and XHT-SX 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. Krytox® XHT-S and XHT-SX greases contain no additives, so they are used where a potential for interaction between process chemicals and grease additives exists. Chemours was formed from former DuPont performance chemicals businesses, including DuPont Performance Lubricants, in 2015.
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Physical Properties	Original Value	Comments

Specific Gravity	1.99 g/cc @Temperature 0.000 °C
Volatiles	<= 1.0 % @Temperature 204 °C, Time 79200 sec
Viscosity Measurement	149	Base Oil Viscosity Index
Kinematic Viscosity	2712 cSt @Temperature 20.0 °C	Base Oil
Kinematic Viscosity at 40°C (104°F)	500 cSt	Base Oil
Kinematic Viscosity at 100°C (212°F)	47 cSt	Base Oil
Vapor Pressure	<= 1.00e-9 torr @Temperature 20.0 °C
	<= 8.00e-7 torr @Temperature 100 °C
	<= 0.000100 torr @Temperature 200 °C

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	300 °C
Minimum Service Temperature, Air	<= -20.0 °C
Pour Point	<= -25.0 °C	Base Oil

Descriptive Properties
Appearance	White, creamy consistency

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WDUPJ919 / 162453

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