Chemours Viton® A-361C Fluoroelastomer Compound

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Chemours Viton® A-361C Fluoroelastomer Compound
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Intermediate viscosity level (when compared with Viton® A-201C/Viton® A-401C) Fully precompounded with reduced curative level and Incorporated metal adhesion promoter Improved processing with increased mold flow, easier mold release with less mold fouling, and improved demolding “hot tear” Good metal bonding with standard industrial primers Applications Compression, transfer, and injection molding of: O-rings and gaskets, Valve stem and crankshaft seals (and other bonded parts requiring fluid and heat resistance of the A-family of Viton®) Chemours was formed from former DuPont performance chemicals businesses, including the Viton product line, in 2015.
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Physical Properties	Original Value	Comments

Specific Gravity	1.82 g/cc	Uncompounded Viton
Mooney Viscosity	63 @Temperature 121 °C	ML (1+10), Uncompounded Viton; ASTM D1646

Mechanical Properties	Original Value	Comments
Hardness, Shore A	77	24 hours Postcure; ASTM D2240
	78	No Postcure; ASTM D2240
Tensile Strength at Break	9.50 MPa	No Postcure; ASTM D412
	14.3 MPa	24 hours Postcure; ASTM D412
Elongation at Break	213 %	24 hours Postcure; ASTM D412
	297 %	No Postcure; ASTM D412
100% Modulus	0.00380 GPa @Strain 100 %	No Postcure; ASTM D412
	0.00550 GPa @Strain 100 %	24 hours Postcure; ASTM D412
Compression Set	7.0 % @Temperature 23.0 °C, Time 252000 sec	O-Rings; ASTM D395B
	17 % @Temperature 200 °C, Time 252000 sec	O-Rings; ASTM D395B
	37 % @Temperature 232 °C, Time 252000 sec	O-Rings; ASTM D395B

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	204 °C	Continuous use
	>= 260 °C	Intermittent use
Minimum Service Temperature, Air	-23.0 - -18.0 °C	Viton is generally useful down to -18 to -23°C.

Processing Properties	Original Value	Comments
Processing Temperature	177 °C @Time 601 sec	Slab Cure
	232 °C @Time 86400 sec	Postcure

Descriptive Properties
Color	Off-white	Uncompounded Viton
Form	Slab	Uncompounded Viton
Formulation as Tested	100	A361C
	3	MgO
	30	MT Black
	6	Ca(OH)2
Odor	None	Uncompounded Viton
Storage Stability	Excellent	Uncompounded Viton

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PDVC9900 / 170541

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