The longest winning streak in NHL history is held by the 1992-1993 Pittsburgh Penguins at 17 games to end the season (though, their last game was a 6-6 tie which would have been win number 18).
The Pens also own the record for most consecutive playoff wins with 11 wins straight in 1991-1992 where they won three straight to end the series with the New York Rangers, swept the Bruins and then swept the Blackhawks to win their second straight Stanley Cup. Their streak actually stands at 14 games however, since the next year in the 1992-1993 playoffs the Pens won three more straight to open those playoffs.
Of additional note, the 1979-1980 Philadelphia Flyers (a.k.a the "Broad Street Bullies") hold the longest undefeated streak (games without a loss) with 35 straight games where they either won or tied. That is a North American professional sports record.
Longest winning streak: Pittsburgh Penguins with 17 straight wins Longest winning streak at home: Detroit Red Wings with 23
Montreal Canadians vs Ottawa in 1982- 1999
1992-93 Pittsburgh Penguins
12 games -- Detroit Red Wings from March 1 - April 15, 2006
The Pittsburgh Penguins won 17 consecutive games in 1993
Wayne Gretzky managed to accumulate a 61 game point streak
Well Alec Connell went 461 minutes and 29 seconds without giving up a goal in the 1927-28 season. That's roughly 7 and a half games.
Yes, the NHL does reseed in the playoffs.
The Edmonton Oilers scored 92 goals in the 1988 playoffs, winning the stanley cup.
currently the Toronto maple leafs have the longest losing streak. They are 0 7 in 1 meaning the tied once and lost 7 games that is of October 25 and they may even have aq longer losing streak
Washington Capitols of the 1974-1975 season. Lost 17 straight games.
NHL players do not get paid during the playoffs.