Provided are: a perfluoroelastomer composition which contains 100 parts by weight of a perfluoroelastomer containing a constituent unit derived from tetrafluoroethylene, a constituent unit derived from a perfluoro(alkylvinyl ether) or a perfluoro(alkoxyalkylvinyl ether) and a constituent unit derived from a nitrile group-containing perfluorovinyl ether, 1 part by weight or more but less than 25 parts by weight of a fluororesin and a specific crosslinking agent; a sealing material which is formed of a crosslinked product of this perfluoroelastomer composition; and a method for producing this sealing material.