Definition - What does Viton mean?
Viton is a synthetic rubber and elastomer material that is commonly used in the manufacture of chemical resistant materials such as O-rings, gloves, sealing materials, and other molded and extruded goods. O-rings that are manufactured using Viton brand rubber are referred to as viton O-rings. Viton is usually green or brown in color and has a higher density than most types of rubber.
Petropedia explains Viton
Viton is compatible with hydrocarbons making it a good material for manufacturing O-rings. The usage of Viton O-rings can be made either in the static or dynamic applications where there is relative motion between the joining parts. For example, they can be used in rotating pump shafts and hydraulic cylinder pistons. These rings are important parts in any mechanical equipment as they provide a permanent and tight seal between two metal parts. Apart from this they are, easy to manufacture, cost-efficient, easily available in the market, reliable and can be simply mounted on a seal slot provided on the parts. One good property of such seals is that they can seal thousands of psi pressure.