High-quality hydraulic hoses, fittings, thread adapters and more for DIY construction, for oil, petrol and water lines Dash 8 Viton O-Rings 2 pack -8 AN Fuel / ethanol / E85 resistant O-rings made of Viton are particularly suitable for screw-in adapters in the area of fuel lines. Viton is not only resistant to petrol, but also to ethanol and methanol. Thus also suitable for E85. Of course, the O-rings can also be used for air connections and the like. They are much more robust than rubber washers and it doesn/t hurt if fuel or similar things come into contact with them.