O-Ring, Viton, #114. Viton o-ring is stocked in brown 75 durometer. They are suitable for acids, aliphatic hydrocarbons, oxidizing agents and all petroleum products. Viton has a low compression set and high temperature resistance. Viton is especially good for vacuum service and low gas permeability and has a useful temperature range of -30 to 200 degrees C. For complete chemical resistance and fluid compatibility, see chart in the specifications tab at the bottom of this listing. FOR VITON O-RINGS USED WITH DURAN FLANGES, SEE CG-147. Made in the United States.