Cantor Technology released the spreads for every NFL game in Weeks 1-16. Below are the lines for Seattle's games.
Week 17 is excluded because of high variance caused by potential playoff seeding, QBs sitting out the final week or playing partial games, etc.
Here is the list for every game.
Week 1
Seahawks at Packers (-3)
Week 2
49ers at Seahawks (-13)
Week 3
Seahawks (-2) at Titans
Week 4
Colts at Seahawks (-7)
Week 5
Seahawks (-6) at Rams
Week 6
BYE
Week 7
Seahawks (PK) at Giants
Week 8
Texans at Seahawks (-7.5)
Week 9
Redskins at Seahawks (-8)
Week 10 (Thursday)
Seahawks (-1.5) at Cardinals
Week 11 (Monday)
Falcons at Seahawks (-3)
Week 12
Seahawks (-7.5) at 49ers
Week 13
Eagles at Seahawks (-7)
Week 14
Seahawks (-4) at Jaguars
Week 15
Rams at Seahawks (-13.5)
Week 16
Seahawks at Cowboys (-3)