They were not in Super Bowl XV. The Oakland Raiders beat the Philadelphia Eagles by 27 points to 10. They played in Super Bowl XL, losing to the Pittsburgh Steelers. They played in Super Bowl XLVIII when they beat the Denver Broncos.
The Seattle Seahawks have never won the Super Bowl.
The Seattle Seahawks have been to the Super Bowl three times. They first appeared in 2005, then in 2013 and 2014. They have won one Super Bowl. It was Super Bowl XLVIII (2013) against the Denver Broncos.
The Seattle Seahawks have not yet won a Super Bowl.
In Super Bowl XL the Steelers defeated the Seattle Seahawks 21-10.
Seattle Seahawks won their first Super Bowl few years ago. On Super Bowl 48, Seattle Seahawks dominated Denver Broncos 43-8. Malcolm Smith was named Super Bowl MVP.
The Seattle Seahawks
Seahawks ever won a super bowl
The Pittsburgh Steelers played the Seattle Seahawks in Super Bowl XL on February 5, 2006.
The Seahawks went to the Superbowl in 2003 and played against the Steelers. The Steelers came out with the win tough.
The Seattle Seahawks won their first Super Bowl in February of 2014. They defeated the Denver Broncos 43-8. This was their second Super Bowl appearance.
The Seattle Seahawks won the 2014 Super Bowl. This is the Seahawks first Super Bowl win. They defeated the Denver Broncos 43 to 8.
The Seahawks were the losing team in Super Bowl XL. This was the only appearance for the Seahawks in a Super Bowl.