Fluoroelastomer crosslinkable composition and article

A fluoroelastomer crosslinkable composition comprising a fluoroelastomer (a) and a cross-linking agent (b),

• wherein the cross-linking agent (b) is at least one selected from the group consisting of:
• a compound (b1) having 2 or more aromatic rings, 2 or more hydroxy groups directly bonded to carbon atoms constituting the aromatic rings, and 1 to 6 substituents (α) directly bonded to carbon atoms constituting the aromatic rings (excluding bromine atom, an amino group, a sulfanyl group, an acid group, and a group containing these groups);
• and a salt of the compound (b1) with an alkali metal, an alkaline earth metal, or an onium compound,
• the compound (b1) has a solubility parameter (SP value) calculated by a Fedors' equation of 12.1 to 17.8 (cal/cm3)1/2, and
• a distance between the oxygen atom of the hydroxy group of the compound (b1) and the carbon atom to which the hydroxy group is directly bonded (O—C bond distance L) is 1.357 to 1.369 Å.