Viton is the most well know fluoroelastomer. There are multiple
variations of Vitons. The most common compounds are Viton A, Viton B, Viton
F, Viton B70, Viton GLT, Viton GFLT and Viton ETP. The most significant
differences in compounds is the percentage of fluorine content and the
curing system used to cure the Viton into its stable shape.
Viton materials are compounded polymers and have excellent resistance to
petroleum product, with low compression and high temperature resistance.
They have low gas permeability. The temperature service range of Viton
materials is from a low of minus 20 degrees Celsius and a high of 450
degrees Celsius.
Viton Seal Compatibility
Resistance to petrochemicals, biodiesel and many forms of hydrocarbons is a
unique characteristic of Viton rubber. Viton is incompatible with highly
polar chemicals, organic acids, amines, ketones, acetone, eaters and acetic
acid.
High temperatures do not significantly affect the resistance of Viton to
chemicals and oil. Elasticity of Viton materials is maintained indefinitely
throughout air oven aging in laboratory reaching 205 degrees Celsius.
Low temperature serviceability of Viton range from minus 18 degrees Celsius
to minus 23 degrees Celsius for dynamic service conditions. Under static
conditions, specially formulated Viton compounds can attain a low of minus
54 degrees Celsius. Viton material has also performed to expectations for
non-dynamic sealing applications in environments close to absolute zero.
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