Chemours Viton® A-331C with MT Black Fluoroelastomer Compound

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Chemours Viton® A-331C with MT Black Fluoroelastomer Compound
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Intermediate viscosity level (when compared with related ”O-Ring” polymers DuPont™ Viton® A-202C and DuPont™ Viton® A-402C) Fully precompounded with reduced curative level and incorporated process aid Improved processing with increased mold flow, better mold release with less mold fouling, and improved demolding ”hot tear” Good compression set resistance Applications Injection, transfer and compression molding of: O-rings, seals, and gaskets Other profiles requiring improved demolding ”hot tear” Extruded O-ring cord, hose, and other profiles Chemours was formed from former DuPont performance chemicals businesses, including the Viton product line, in 2015.
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Physical Properties	Metric	English	Comments

Mooney Viscosity	65 @Temperature 121 °C	65 @Temperature 250 °F	ML (1+10), Uncompounded Viton; ASTM D1646

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	71	71	No Postcure; ASTM D2240
	77	77	24 hours Postcure; ASTM D2240
Tensile Strength at Break	9.70 MPa	1410 psi	No Postcure; ASTM D412
	13.5 MPa	1960 psi	24 hours Postcure; ASTM D412
Elongation at Break	237 %	237 %	24 hours Postcure; ASTM D412
	351 %	351 %	No Postcure; ASTM D412
100% Modulus	3.10 MPa @Strain 100 %	450 psi @Strain 100 %	No Postcure; ASTM D412
	4.50 MPa @Strain 100 %	653 psi @Strain 100 %	24 hours Postcure; ASTM D412
Compression Set	18 % @Temperature 23.0 °C, Time 252000 sec	18 % @Temperature 73.4 °F, Time 70.0 hour	O-Rings; ASTM D395B
	21 % @Temperature 200 °C, Time 252000 sec	21 % @Temperature 392 °F, Time 70.0 hour	O-Rings; ASTM D395B
	29 % @Temperature 200 °C, Time 605000 sec	29 % @Temperature 392 °F, Time 168 hour	O-Rings; ASTM D395B
	40 % @Temperature 232 °C, Time 252000 sec	40 % @Temperature 450 °F, Time 70.0 hour	O-Rings; ASTM D395B

Processing Properties	Metric	English	Comments
Processing Temperature	177 °C @Time 601 sec	351 °F @Time 0.167 hour	Slab Cure
	232 °C @Time 86400 sec	450 °F @Time 24.0 hour	Postcure

Descriptive Properties
Formulation as Tested	100		A-331C
	3		MgO
	30		MT Black
	6		Ca(OH)2

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PDVC9894 / 170535

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