The Carolina Panthers also announced that OL Jeff Byers has retired from the NFL as well.
Byers, 28, appeared in 22 games and started a seven games for Carolina after being an undrafted free-agent in 2010.
Byers graded as an above-average run blocker with the Panthers after being called up from the practice squad in 2012, according to Pro Football Focus. Byers had season ending surgery after sustaining a left Lisfranc injury at the mid-way point of last season.
“I’ve known for a while I was going to retire. I knew when I came back this was going to be my last year,” said Hangartner, “It was a good way for me to end because I got to come back and play for a team I loved playing for and finish out with my buddies. Luckily we had some success, which made it even more fun. It was a fitting way for me to end my career.”
Hangartner, 31, played in 115 games and started 85 of them after being selected in the fifth-round by the Panthers.