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	Original Value	Comments

Specific Gravity	1.82 g/cc	ASTM D297

Mechanical Properties	Original Value	Comments
Hardness, Shore A	75	ASTM D2240
Tensile Strength at Break	2050 psi	ASTM D1414
Tensile Strength, Yield	600 psi	@50% Elongation; ASTM D1414
	1026 psi	@100% Elongation; ASTM D1414
Elongation at Break	182 %	ASTM D1414
Compression Set	20 % @Temperature 204 °C, Time 252000 sec	At 25% deflection; ASTM D395

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	392 °F
Minimum Service Temperature, Air	-22.0 °F

Descriptive Properties
Color	Black

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PGREEN45 / 42339

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