Question: what is the difference between viton and buna o rings?
Answer: Viton is the choice over Buna for high-temperature applications. Viton seals hold indefinitely at temperatures up to 400°F and can last up to 48 hours at temperatures up to 600°F. Buna is effective to 250°F. ... Viton offers universal chemical resistance for sealing applications for oils, fuels, and mineral acids.