Daikin DEMNUM™ S-20 Perfluoropolyether oil

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Daikin DEMNUM™ S-20 Perfluoropolyether oil
Categories:	Fluid; Lubricant; Perfluoropolyether (PFPE)
Material Notes:	DEMNUM™ is a perfluoropolyether oil that has a straight-chain structure developed using DAIKIN’s original technology. It has excellent thermal and chemical stability and inertness, and is suitable as a lubricant grease especially when durability and cleanliness are required. DEMNUM GREASE is a grease formed with DEMNUM as the base oil, chemically inert with excellent high-thermal stability and solvent resistance. Information provided by Daikin.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.860 g/cc	1.860 g/cc
Viscosity Measurement	150	150	Index
Kinematic Viscosity	14 cSt @Temperature 60.0 °C	14 cSt @Temperature 140 °F
	53 cSt @Temperature 20.0 °C	53 cSt @Temperature 68.0 °F
Kinematic Viscosity at 40°C (104°F)	25 cSt @Temperature 40.0 °C	25 cSt @Temperature 104 °F
Kinematic Viscosity at 100°C (212°F)	5.0 cSt @Temperature 100 °C	5.0 cSt @Temperature 212 °F
Molecular Weight	2700 g/mol	2700 g/mol
Vapor Pressure	1.00e-8 bar @Temperature 20.0 °C	0.00000750 torr @Temperature 68.0 °F
	0.00200 bar @Temperature 100 °C	1.50 torr @Temperature 212 °F
Surface Tension	17.7 dynes/cm	17.7 dynes/cm

Electrical Properties	Metric	English	Comments
Dielectric Breakdown	72000 V @Thickness 2.50 mm	72000 V @Thickness 0.0984 in

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	1.00 J/g-°C	0.239 BTU/lb-°F
Pour Point	-75.0 °C	-103 °F
Glass Transition Temp, Tg	-115 °C	-175 °F

Optical Properties	Metric	English	Comments
Refractive Index	1.290	1.290	n_D

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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PDAIJ9938 / 210009

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