Crosby put Pittsburgh ahead 1-0 at 5:24 of the second period, scoring on a one-timer from the high slot off a set up by Guentzel.
"It's tough. It's difficult," Crosby said. "We did a lot of good things. … You look at the game as a whole and we did a lot of good things, but we're making a few mistakes. When you're losing, that's magnified even more. So that's the situation we're in. We just have to try to build off it, continue to play good hockey, and trust that we'll get rewarded."
Vince Dunn tied it 1-1 at 7:48 with a slap shot through traffic off a face-off win by Gourde.
"This group, they're a pretty tight group," Seattle coach Dave Hakstol said. "That's always a great place to start. Tonight, third game in a road trip, there were pieces here that weren't all that pretty. But there was never a point in the hockey game where you felt our group was rattled."
NOTES: Crosby was playing in his 1,120th game, the sixth-fewest needed to reach 900 assists in League history, behind Wayne Gretzky (584), Mario Lemieux (771), Paul Coffey (991), Adam Oates (1,056) and Ron Francis (1,108). … Pittsburgh forward Jeff Carter participated in an optional morning skate but missed his third game with a lower-body injury. … Kraken forward Jared McCann missed his second straight game with a lower-body injury.