This specially formulated Flex Fuel O-Ring handles gasoline, ethanol, & methanol applications interchangeably.

Most O-Ring compounds, including most Viton O-Ring compounds, will excessively swell or weaken in the presence of one fuel or the other. We’ve manufactured a custom batch of a Flex Fuel specific compound previously unavailable in small quantities at low cost.

The flexibility is worth the extra cost to many of our customers, so this has been a frequent request we’re happy to fulfill!

Compatible with regular petrol, gasoline E15, E85, E100, methanol, ethanol and most race fuels.