Chemours Krytox® 210 GPL Extreme Pressure Grease

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Chemours Krytox® 210 GPL Extreme Pressure Grease (discontinued **)
Categories:	Fluid; Lubricant; Perfluoropolyether (PFPE); PTFE Gellant
Material Notes:	Krytox® GPL 210–217 EP greases are black greases that contain 5% molybdenum disulfide added as an extreme pressure additive for highly loaded gears and bearings. The grease additives may alter the chemical resistance of the grease. The standard grease consistency is NLGI grade 2 penetration (265–295). Softer or harder NLGI penetration grades can be made by special order. Special nonmelting silica thickeners are available for applications that are higher than the 325°C(617°F) melting point of the standard PTFE thickener. These greases are based on Krytox® GPL 100–107 oils - clear, colorless, fluorinated synthetic oils that are nonreactive, nonflammable, safe in chemical and oxygen service, and are long-lasting. Krytox® is a perfluoropolyether (PFPE)—also called perfluoro-alkylether (PFAE) or perfluoropolyalkylether (PFPAE). The polymer chain is completely saturated and contains only carbon, oxygen, and fluorine. On a weight basis, a typical Krytox® oil contains 21.6% carbon, 9.4% oxygen, and 69.0% fluorine. Information provided by DuPont Performance Lubricants.
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Physical Properties	Original Value	Comments

Density	1.67 g/cc @Temperature 100 °C
	1.87 g/cc @Temperature 0.000 °C
Kinematic Viscosity	12 cSt @Temperature 20.0 °C	ASTM D445
Kinematic Viscosity at 40°C (104°F)	5.5 cSt	ASTM D445
Evaporation Loss	11 %	Volatility; 22 hr; 66°C; ASTM D972 Modified
	87 % @Temperature 121 °C, Time 79200 sec	Volatility; ASTM D972 Modified

Mechanical Properties	Original Value	Comments
Coefficient of Friction, Dynamic	0.080	4-Ball Wear Test; 1200 rpm/60 min; ASTM D4172
Four Ball Wear	0.400 mm	1200 rpm/60 min; ASTM D4172
Falex Load Test	1375 lb	V-Block Load Carrying Ability; 30 in-lb torque at max load; ASTM D3233
Oil Separation	18 %	30 hr; 99°C; FTMS 791B 321.1

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	66.0 °C
Minimum Service Temperature, Air	<= -70.0 °C
Pour Point	<= -70.0 °C	ASTM D97

Component Elements Properties	Original Value	Comments
Carbon, C	21.6 %
Fluorine, F	69 %
Oxygen, O	9.4 %

Descriptive Properties
ISO Grade of Oil	5

**
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