To provide an adhesive excellent in heat resistance and adhesive property. An adhesive comprising a fluorinated polymer having a weight average molecular weight (Mw) of from 6×10 3 to 3×10 4 and having iodine atoms at both terminals, and a radical generator. The fluorinated polymer has structural units derived from at least one monomer selected from the group consisting of tetrafluoroethylene, vinylidene fluoride, hexafluoropropylene and a perfluoro(alkyl vinyl ether).