In terms of longevity, Chris Gray is one of the most tenured members in the history of the Seattle Seahawks.
Max Unger arrived in Seattle, coming north as Second Round Pick from Oregon in 2009.
Michael Bennett was not drafted after he left Texas A&M in 2009, but he signed with the Seattle Seahawks. He was released before he could play a down.
Doug Baldwin had an excellent career with Stanford, but it did not result in a draft pick in 2011. The Seattle Seahawks signed him, and Baldwin made the team, which would be the only franchise he would play for in the National Football League.