Daikin DAI-EL® G-EXP-042 Fluoroelastomer Copolymer, 66% Fluorine Content

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Daikin DAI-EL® G-EXP-042 Fluoroelastomer Copolymer, 66% Fluorine Content
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	DAI-EL® G-EXP-042 is a cure incorporated copolymer with medium-high Mooney viscosity. It is designed for compression molding of O-rings, seals, and other parts where moderate cure speed and low compression set are required. Typical Applications: O-rings, seals, gaskets, molded tubing Rheological Properties MDR 2000: Temperature: 177°C Frequency: 100 cpm Strain: 0.5° Test time: 6 min Information provided by Daikin.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.81 g/cc	1.81 g/cc
Mooney Viscosity	60 @Temperature 121 °C	60 @Temperature 250 °F	ML 1+10

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	78	78
Tensile Strength at Break	12.0 MPa	1740 psi
Elongation at Break	180 %	180 %
100% Modulus	6.50 MPa @Strain 100 %	943 psi @Strain 100 %
Compression Set	17 % @Temperature 200 °C, Time 252000 sec	17 % @Temperature 392 °F, Time 70.0 hour	#214 O-ring; ASTM D395 Method B

Thermal Properties	Metric	English	Comments
Minimum Service Temperature, Air	-18.0 °C	-0.400 °F	Low Temperature Retraction; ASTM D1329

Processing Properties	Metric	English	Comments
Cure Time	2.00 min	0.0333 hour	ts2, scorch time
	2.50 min	0.0417 hour	t'50, time to 50% cure
	3.50 min	0.0583 hour	t'90, time to 90% cure
	10.0 min @Temperature 177 °C	0.167 hour @Temperature 351 °F	Press Cure
	1440 min @Temperature 232 °C	24.0 hour @Temperature 450 °F	Post Cure

Component Elements Properties	Metric	English	Comments
Fluorine, F	66 %	66 %

Descriptive Properties
Color	White to cream
MH	28.6 dNm		maximum torque
ML	1.71 dNm		minimum torque
Test Formula	100 phr		DAI-EL® G-EXP-042
	3 phr		Magnesium oxide
	30 phr		MT Carbon Black (N-990)
	6 phr		Calcium hydroxide

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PDAIJ9810 / 209881

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