The present invention discloses a sealing system for a refrigerator and, more particularly, a sealing system located between the doors of a refrigerator and its acclimatized chambers and of the kind that comprises a gasket to be inserted in a receiving channel existing also between the doors of a refrigerator and its acclimatized chambers. The sealing system for refrigerator herein reported consists of at least one gasket comprising a tubular body formed by at least one attaching end and by at least one sealing body; at least one groove defined in at least one movable door or at least one fixed cabinet; and by at least one rib defined in at least one movable door or at least one fixed cabinet.