They've won 6 but have been in 8.
(see related link for all Super Bowl MVP winners)
As of November 2013, the following teams have won the Super Bowl exactly five times:Dallas Cowboys (5 wins out of 8 appearances)San Francisco 49ers (5 wins out of 6 appearances)Additionally, the Pittsburgh Steelers have won 6 times out of 8 appearances in the Super Bowl.
Through Super Bowl XLII, that has never happened. The lowest regular season winning percentage to win the Super Bowl was .625 (10-6) by the 49ers that won Super Bowl XXIII and the Giants that won Super Bowl XLII.
dallas, Yes, The Dallas Cowboys have went to the Super Bowl 8 times and won 5. Extra Note: The Pittsburgh Steelers who have the most Super Bowl wins (6) went to the Super Bowl 7 times. Their 1 and only Super Bowl loss was against the Dallas Cowboys.
8 super bowl won 5 lost 3
The Dallas Cowboys have been to the super bowl 8 times and have won 5 times. Most recently going 3 times and winning all 3 in the 1990's.
The Pittsburgh Steelers have 6 Super Bowl Championships. They have gone to the Super Bowl 8 times, and have won 6 times:1974 (win)1975 (win)1978 (win)1979 (win)1995 (loss)2005 (win)2008 (win)2010 (loss)Three other teams are close, with 5 championships each:San Francisco 49ers (gone 6 times, won 5)Dallas Cowboys (gone 8 times, won 5)New England Patriots (gone 10 times, won 5)
The Dallas Cowboys have been to the Super Bowl the most with 8 appearances of which 5 were won.
The Pittsburgh Steelers were up 3-0 after the first quarter in Super Bowl XLIII.
They have been to 8 Super Bowls and have won 5.
The Seahawks have never won the Super Bowl. They have appeared once, in Super Bowl XL against the Pittsburgh Steelers in Detroit. The Steelers won 21-10.SEAHAWKS WON 2013