DuPont Mobility and Materials Kalrez® 4079 FFKM Perfluoroelastomer

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DuPont Mobility and Materials Kalrez® 4079 FFKM Perfluoroelastomer
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	A low compression set compound for general-purpose use in O-rings, diaphragms, seals, and other parts used in the process and aircraft industries. It is a carbon black-filled compound with excellent chemical resistance, good mechanical properties, and outstanding hot air aging properties. It exhibits low swell in organic and inorganic acids and aldehydes and has good response to temperature cycling effects. Max recommended operating temperature is 316°C, with short excursion to higher temperatures possible. This compound is not recommended for use in hot water/steam applications or in contact with certain hot aliphatic amines, ethylene oxide, or propylene oxide.
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Physical Properties	Original Value	Comments

Density	2.02 g/cc	ISO 1183

Mechanical Properties	Original Value	Comments
Hardness, Shore A	75	ASTM D 2240
Elongation at Break	150 %	ASTM D 412
100% Modulus	7.20 MPa	ASTM D 412
Compression Set	14 % @Temperature 204 °C, Time 252000 sec	Pellet (Type 1); ASTM D 395B
	35 % @Temperature 204 °C, Time 252000 sec	O-ring (AS568-214); ASTM D 1414

Thermal Properties	Original Value	Comments
CTE, linear	361 µm/m-°C	ISO 11359-1/-2
Maximum Service Temperature, Air	316 °C	DuPont proprietary test
Minimum Service Temperature, Air	-19.0 °C	DuPont proprietary test
	-2.00 °C	Retraction temperature TR-10; ASTM D 1329

Descriptive Properties
Color	Black
Polymer	(FFKM)

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PDVD00 / 33864

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