There have been several players who wore number 6 for the New York Rangers. Currently, Wade Redden is wearing the number. The people who I can think of who have worn this number are Kasparitis, Glen Sather, Manny Malhotra, Bill Baker, Fred Cook, Lidster, and that's it really. I'm sure I'm missing about 30 but I don't think anyone else is of any significance. If you go to rangers.nhl.com, you can probably find the all-time roster by number.
Jhonas Enroth
Thomas Greiss
Johan Hedberg
Jonas Hiller
Brent Johnson
Jason LaBarbera
Roberto Luongo
Steve Mason
Curtis McElhinney
EDDIE GIACOMIN greatest rangers goaltender of all time
For both the 1993-94 and 1994-95 seasons, Sergei Nemchinov wore #13 for the New York Rangers.
Mookie Wilson.
Rod Gilbert. His number is retired.
Anton Stralman is number 6 on the New York Rangers.
Benoit Pouliot is number 67 on the New York Rangers.
Brandon Mashinter is number 40 on the New York Rangers.
Carl Hagelin is number 62 on the New York Rangers.
Chris Kreider is number 20 on the New York Rangers.
Conor Allen is number 37 on the New York Rangers.
Dan Girardi is number 5 on the New York Rangers.
Daniel Carcillo is number 13 on the New York Rangers.
David LeNeveu is number 29 on the New York Rangers.
Derek Stepan is number 21 on the New York Rangers.
Dylan McIlrath is number 42 on the New York Rangers.
Jason Missiaen is number 31 on the New York Rangers.