Fluoroelastomer composition

The invention pertains to a fluoroelastomer composition comprising: (a) a vinylidene fluoride-based fluoroelastomer [fluoroelastomer (A)] comprising recurring units derived from vinylidene fluoride (VDF) and recurring units derived from at least one additional (per)fluorinated monomer; said fluoroelastomer (A): -possessing a polydispersity index (IMWD) of between 1.5 and 3.5, -comprising an amount of polar end groups of formula -CF2CH2OH of at least 3 mmol/kg and at most 6 mmol/kg, and -further comprising end of chain groups of formula -CF2H, -CF2CH3, and, optionally, -OC(o)-RH (with RH being a C1-C6 alkyl group) in an amount such to satisfy the following inequality: [-CF2CH2OH]+[-CF2H]+[-CF2CH3H-OC(o)RH]≤30+(2×106)/Mn, (b) at least one polyhydroxylated curing agent; (c) at least one accelerant; (d) at least one metal oxide selected from the group consisting of divalent metal oxides; and (e) optionally, at least one metal hydroxide, wherein the amount of said metal hydroxide, if present, is below 3 phr, based on 100 weight parts of fluoroelastomer (A).