The moviemaker passed away at a retirement home in California from an age-related illness on Friday (18Feb11), according to officials at the Motion Picture & Television Fund (MPTF).
Seltzer worked in film publicity from the 1930s until the 1950s but took four years out from the industry to serve in the Marines during World War II.
He also produced several movies including Soylent Green, The Omega Man, Shake Hands With the Devil and One-Eyed Jacks for Marlon Brando and Charlton Heston's production companies in the 1960s and 1970s.
He spent much of the 1980s as a fundraiser for the MPTF, co-chairing a campaign that raised $50 million (£35 million). Seltzer was on the Board of Trustees of the organisation.