56 matches [1973-1976]
36 points [12 tries]
Debuted at Parramatta in 1971 before heading further west to Penrith in 1973.
Langmack would play 13 matches in his first season at the Panthers, crossing for one try.
He would start in all 22 matches in 1974 at lock. In the match against St. George at Penrith Park, he crossed for 5 tries, which to this day remains a club record.
He would play two more seasons at the Panthers before leaving at the end of the 1976 season, where he would return to the Eels. He retired at the end of the 1978 season.
He was the older brother of Paul who played over 300 first grade matches at Canterbury, Western Suburbs and the Roosters, and his sister Diane is currently employed as the public relations manager at the Panthers.