Langford, 26, started 12 games, played in all 16 and was on the field for about half the Dolphins' defensive snaps last season. He split time at left defensive end and left defensive tackle.
This is not a flashy signing for the Rams. It won't steal air time from Peyton Manning. But it's another indication the Rams are plugging away at rebuilding their roster. Langford's relative youth is a plus.
The Rams ranked 31st in rushing yards allowed and 28th in rushing yards allowed per carry. They are starting over at defensive tackle this offseason, having cut ties with Fred Robbins while letting others hit the market.
Langford, 6-foot-6 and 295 pounds, is best known as a run defender. A third-round choice in 2008, Langford has 7.5 sacks in four seasons, including zero in 2011.
Former Tennessee Titans defensive lineman Jason Jones also visited the Rams recently. I'll be watching to see what Langford's contract agreement with St. Louis might signal regarding Jones, who also visited the Seattle Seahawks recently.
Langford will sign a four-year, $24 million deal with the Rams, according to ESPN's Adam Schefter.