Greene Tweed Fluoroelastomer 742 FKM

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Greene Tweed Fluoroelastomer 742 FKM
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Fluoroelastomer 742 performs well in aggressive chemicals and where ultrapure materials are not required. Recommended for conventional wet and dry system applications, Fluoroelastomer 742 has a good field performance history in both dynamic and static applications. The mid-range durometer of this material allows the seal to conform to a wide range of hardware features. Applications: Bonded slit valve doors Chamber seals Door seals Window seals Lid seals Gas inlet seals KF fitting seals Valve seals Gaskets Fitting and union seals Information provided by Greene Tweed.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.82 g/cc	1.82 g/cc	ASTM D297

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	75	75	ASTM D2240
Tensile Strength at Break	14.1 MPa	2050 psi	ASTM D1414
Tensile Strength, Yield	4.14 MPa	600 psi	@50% Elongation; ASTM D1414
	7.074 MPa	1026 psi	@100% Elongation; ASTM D1414
Elongation at Break	182 %	182 %	ASTM D1414
Compression Set	20 % @Temperature 204 °C, Time 252000 sec	20 % @Temperature 400 °F, Time 70.0 hour	At 25% deflection; ASTM D395

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	200 °C	392 °F
Minimum Service Temperature, Air	-30.0 °C	-22.0 °F

Descriptive Properties
Color	Black

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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PGREEN45 / 42339

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