Daikin DAI-EL® G-7251 Fluoroelastomer Copolymer, Bisphenol Curable Grade, 66% Fluorine Content

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Daikin DAI-EL® G-7251 Fluoroelastomer Copolymer, Bisphenol Curable Grade, 66% Fluorine Content
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	DAI-EL® G-7251 is a bisphenol cure-incorporated copolymer with low Mooney viscosity. It is designed especially for injection molding of seals and other complex shapes. It has excellent mold flow and low compression set. Typical Applications: Shaft seals, gaskets, molded tubing Rheological Properties MDR 2000: Temperature: 177°C Frequency: 100 cpm Strain: 0.5° Test time: 6 min Rheological Properties ODR: Temperature: 177°C Frequency: 100 cpm Strain: 3 ° Test time: 12 min Information provided by Daikin.
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Physical Properties	Original Value	Comments

Specific Gravity	1.81 g/cc
Mooney Viscosity	20 @Temperature 121 °C	ML 1+10

Mechanical Properties	Original Value	Comments
Hardness, Shore A	79	MDR 2000
	79	ODR
Tensile Strength at Break	12.4 MPa	MDR 2000
	13.2 MPa	ODR
Elongation at Break	200 %	MDR 2000
	210 %	ODR
100% Modulus	5.80 MPa @Strain 100 %	MDR 2000
	5.80 MPa @Strain 100 %	ODR
Compression Set	16 % @Temperature 200 °C, Time 252000 sec	#214 O-ring, MDR 2000; ASTM D395 Method B
	18 % @Temperature 200 °C, Time 252000 sec	#214 O-ring, ODR; ASTM D395 Method B

Thermal Properties	Original Value	Comments
Minimum Service Temperature, Air	-18.0 °C	Low Temperature Retraction; ASTM D1329

Processing Properties	Original Value	Comments
Cure Time	1.70 min	ts2, scorch time, MDR 2000
	2.10 min	t'50, time to 50% cure, MDR 2000
	2.50 min	ts2, scorch time, ODR
	3.00 min	t'90, time to 90% cure, MDR 2000
	3.80 min	t'50, time to 50% cure, ODR
	4.50 min	t'90, time to 90% cure, ODR
	2.00 min @Temperature 177 °C	Press Cure, MDR 2000
	5.00 min @Temperature 177 °C	Press Cure, ODR
	24.0 hour @Temperature 232 °C	Post Cure, MDR 2000
	24.0 hour @Temperature 260 °C	Post Cure, ODR

Component Elements Properties	Original Value	Comments
Fluorine, F	66 %

Descriptive Properties
Color	White to cream
MH	110 dNm	maximum torque, ODR
	23.4 dNm	maximum torque, MDR 2000
ML	0.6 dNm	minimum torque, MDR 2000
	4.8 dNm	minimum torque, ODR
Test Formula	100 phr	DAI-EL® G-7251
	3 phr	Magnesium oxide
	30 phr	MT Carbon Black (N-990)
	6 phr	Calcium hydroxide

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PDAIJ9829 / 209900

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