2006 New York Code - Release In Writing Without Consideration Or Seal.

 
    § 15-303. Release  in writing without consideration or seal. A written
  instrument which purports to be  a  total  or  partial  release  of  all
  claims,  debts, demands or obligations, or a total or partial release of
  any particular claim, debt,  demand  or  obligation,  or  a  release  or
  discharge  in whole or in part of a mortgage, lien, security interest or
  charge upon personal or real property, shall not be invalid  because  of
  the absence of consideration or of a seal.