Born in Córdoba, Argentina in 1934, Seguí studied art and sculpture in France and Spain. He is today considered a master Latin American painter and print maker.
In 1958 he headed for Mexico where he met David Alfaro Siqueiros and studied printmaking techniques. He exhibited at the Paris Biennial of Young Painters in 1963 and has resided in Paris ever since.
His work, which explores a world of dark humor and gentle satire, all executed with impeccable technique, has been shown in numerous galleries and museums in the Americas and Europe, including the E. Franck Gallery Knokke-Le-Zoute, Belgium; the E. Franck Gallery, Chicago; Claude Bernard Gallery, New York; Museo de Artes Visuales, Montevideo, Uruguay; Centre d'Art Contemporaine, Mont-de-Marsan, France; Sonia Zannettacci Gallery, Geneva, Switzerland; Galleria San Carlo, Milan, Italy; Fundacao C. Gulbenkaian, Portugal; Gallerie J. Rubeiz, Beirut, Lebanon.
Awards he has received include First Prize from the Lodz Museum in 1967, Juror's Prize in both the I and VII San Juan Biennial of the Latin American Print (1970 and 1986) and the Grand Prize of the Fondo Nacional de las Artes, Buenos Aires, in 1990. A Retrospective of his career was hosted by the Frissiras Museum in Athens, Greece, in 2004.