The Islanders halted a two-game losing streak thanks in part to Comeau's first goal of the season.
In a 2-2 game, Comeau fired a blast from the left circle that beat a screened Dany Sabourin with 9:32 left to play. Hunter then scored on a wrister and Rick DiPietro preserved the win by making 24 saves.
Pittsburgh took a 2-1 lead on Jordan Staal's power-play goal 4:20 into the second period, but Andy Hilbert tied it four minutes later. The Penguins lost their second game in three outings.