He spent the majority of his 738-game National Hockey League (NHL) career with the Buffalo Sabres, but also played one season for the Detroit Red Wings.
Teammates on the Canadian roster that year included future number one draft picks Dale McCourt and Rob Ramage, as well as Ron Duguay, John Anderson, Dave Hunter and Al Secord.
He spent five more seasons with the Sabres, but was dealt to the Detroit Red Wings on October 7, 1986, where he played his final year in the NHL.
Seiling was sent to the American Hockey League's Adirondack Red Wings in 1987–88,[1] and retired after a season spent as a player-assistant coach.
He returned to coaching in 1994 with the Utica Blizzard of the Colonial Hockey League, leading the team to a 31–38–5 record and an eventual first round loss in the postseason.