The Seahawks waived Hart on Monday, Bob Condotta of The Seattle Times reports.
Hart made his NFL debut this season and played 11 games for the Seahawks, posting a three-yard reception and a 19-yard carry. He was cut to make room on the 53-man roster for Josh Gordon, who has been reinstated from his suspension. If Hart clears waivers, he'll likely land on the team's practice squad.