The invention pertains to a polyunsaturated compound having formula (I) [compound (DAIC-PFPE)]: T.sup.A-OR.sub.f-T.sup.A wherein: R.sub.f is (per)fluoropolyoxyalkylene chain [chain (R.sub.f)] comprising recurring units having at least one catenary ether bond and Sat least one fluorocarbon moiety; T.sup.A and T.sup.A, equal to or different from each other, are selected from the group consisting of: (i) C.sub.1-C.sub.24 (hydro)(fluoro)carbon groups, possibly comprising one or more than one of H, O, and Cl; and (ii) (hydro)(fluoro)carbon group comprising at least one diallylisocyanurate group of formula (A) wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 is, independently, a hydrogen atom or a C.sub.1-C.sub.3 hydrocarbon group, preferably a hydrogen atom (group T.sup.DAIC), with the provisio that at least one of T.sup.A and T.sup.A is a group T.sup.DAIC, to a process for its manufacture and its use for curing fluoroelastomers, to fluoroelastomer compositions comprising the same, as well as to a process for producing fluororubber mouldings therefrom.

##STR00001##