RUBBER COMPOSITION AND SEALED FUEL CELL

There is provided a rubber composition which does not foul molds, requires low production costs and is excellent in mass productivity, and has high adhesion reliability. The rubber composition according to the present invention is used in an adhesive layer 6 included in a fuel cell sealed body allowing a constituting member for a fuel cell 2, 3 or 5 and a rubber member for sealing 4a or 4b to be bonded together through the adhesive layer 6 or allowing the two rubber members 4a and 4a to be bonded together through the adhesive layer 6, and is any one of the following liquid rubber composition (±) and the following solvent-based rubber composition (²). (±) a liquid rubber composition containing (B) and (C) together with the following (A1). (²) a solvent-based rubber composition containing a solvent together with the following (A2), (B) and (C). (A1) a rubber component containing at least liquid rubber. (A2) at least one selected from the group consisting of EPM, EPDM, NBR and H-NBR. (B) a crosslinking agent composed of an organic peroxide. (C) at least one selected from the group consisting of resorcinol-based compounds, melamine-based compounds, aluminate-based coupling agents and silane coupling agents.