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Viton® gaskets have excellent resistance to high temperatures, ozone, oxygen, mineral oil, synthetic hydraulic fluids, fuels, aromatics and many organic solvents and chemicals. Low temperature resistance is normally not favorable and for static applications is limited to approximately –15°F (–26°C) although in certain situations it is suitable down to –40°F (–40°C). Under dynamic conditions, the lowest service temperature is between 5°F and 0°F (–15°C and –18°C). Gas permeability is very low and similar to that of butyl rubber. Special fluorocarbon compounds exhibit an improved resistance to acids, fuels, water and steam.
Viton® A Gasket Material = 66% Flourine
Chemical Resistance = Good
Download the Viton® A Datasheet as PDF
General Properties
Offers a broad range of resistance to oils, fuels, lubricants and most mineral oils. Very good resistance to many aliphatic hydrocarbon fluids that act as solvents for many other rubbers. Exceptionally good resistance even at temperatures that can stiffen other non-fluorinated elastomers. Viton® A is resistant to atmospheric oxidation, sun, weather, and has excellent resistance to fungus and mold.
Available Compounds:
Viton® A offers good fluid resistance at a very affordable price. Viton® GLT Peroxide curable offering low temperature flexibility -40°C (-40°F).
Viton® B Gasket Material = 68% Flourine
Chemical Resistance = Better
Download the Viton® B Datasheet as PDF
General Properties
Viton® B has better resistance and retains flexibility better after dry heat aging than Viton® A. It is recommended with good mechanical properties. Viton® B is specified by the Fluid Sealing Association to resist sulfur dioxide in power generating factory systems. Viton® B offers superior resistance to both diluted and concentrated aggressive acids, and various mineral acids including: Sulfuric Acid, Nitric Acid, and Hydrochloric Acid.
Available Compounds:
Viton® B offers better overall fluid resistance than Viton A, with economical pricing.
Viton® GB Peroxide curable offering better a compression set.
Viton® GBLT Peroxide curable offering low temperature flexibility -40°C (-40°F).
Viton® F Gasket Material = 70% Fluorine
Chemical Resistance = Best
Download the Viton® F Datasheet as PDF
General Properties
The "F" family of Viton® was designed for today's oxyengated fuels, modern lubricants, and blended chemicals. As new chemicals and fuels are developed, new technology in Viton has led to the development of the Viton® F family of sealing products. Viton® F offers excellent resistance to fluids that Viton® A and B types cannot adequately resist. Viton® F types are highly resistant to oxygenated fuels containing (MeOH, EtOH, MTBE), engine lubricants (SE-SF and SG-SH grades), aromatic hydrocarbon process fluids, chemicals and conentrated mineral acids.
Available Compounds:
Viton® B (with Bisphenol cure). Viton® F offers the best fluid resistance at a very affordable price. Viton® GF Peroxide curable offering resistance to Aqueous Fluids: Water, Steam and Mineral Acids. (H2SO4, HNO3, HCL, etc.)

Viton® GFLT Peroxide Curable offering exceptional chemical resistance and maintains flexibility in low temperature applications -40°C (-40°F).
Viton® Gasket Material Extreme
Download the Viton® Extreme Datasheet as PDF
General Properties
Viton® Extreme offers more universal chemical resistance than either standard grades of Viton® or TFE/P (Aflas) Elastomers.

Viton® Extreme was originally develolped to resist Sour (H2S) petroleum environments that are commonly found in the oil field. However, it has become widely used in the Chemical Processing, Pertoleum Refining, Semiconductor and Chemical Transportation industry.

Today's blended fuels with additives and oxygenates such as MTBE, TAME, ETBE and alcohols offer difficult sealing solutions that Viton® Extreme can solve without the cost of high performance perfluoroelastomers (Kalrez).
Available Compounds:
Viton® ETP Cost-effective replacement for perfluoroelastomers like Kalrez, Chemraz, and Simriz
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