Career
He participated in 12 Formula One World Championship Grands Prix, debuting on 2 August 1953. He scored no championship points. Seidel often entered cars under his own name, or under the Scuderia Colonia banner.
He died in 1987 of a heart attack.
(key)
Non-Championship results
(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap).