Murray allowed one goal on seven shots in the first period but sustained a lower-body injury with 18 seconds left in the period and exited the game. Grubauer faced 14 shots in the second period and kept the game tied 1-1 until Seattle scored two goals in a span of 38 seconds to take a 3-1 lead.
Jaden Schwartz scored twice, Adam Larsson and Eeli Tolvanen each had a goal, and Jamie Oleksiak and Chandler Stephenson had two assists each for the Kraken (9-4-5), who have won two straight.
Alex Wennberg scored for the Sharks (8-8-3), who have lost their past two after ending a four-game winning streak with a 2-0 loss at the Calgary Flames on Thursday. Alex Nedeljkovic had 19 saves.
Schwartz gave the Kraken a 1-0 lead at 8:14 of the first period. Stephenson picked up a loose puck at the blue line, skated around Sharks defenseman John Klingberg and found Schwartz at the far post, who redirected it into an open net.
Wennberg tied it 1-1 with a power-play goal at 19:42, redirecting Macklin Celebrini’s shot-pass from the right dot at the top of the crease.
Murray was replaced by Grubauer after the goal.
Larsson gave Seattle a 2-1 lead at 16:05 of the second period with a wrist shot from just outside the right circle that floated through a screen and over Nedeljkovic’s left shoulder.
Tolvanen pushed it to 3-1 at 16:43, one-timing Stephenson’s cross-slot feed on a 2-on-1 past Nedeljkovic’s glove.
Schwartz scored his second goal into an empty net while short-handed at 16:31 of the third period for the 4-1 final.