Transpolyoctenamer(TOR: M_w50,000∼60,000, trans content 80%, crystallinity 33%, T_m 55℃) is a metathesis polymer of cyclooctene with prevalently tracts-isomeric double bonds. In the dynamic mechanical properties, the (tanδ)_max values of extended TOR films are larger than those of original TOR films because macrocyclic oligomer entanglement may be loosened by external forces. Extensibility of molecular chains improved with decreasing the extension temperature, which decreased the(tanδ)_max. On the TOR vulcanizates carbon black 60 phr loaded vulcanizate (at oil 10phr), oil 5 phr loaded vulcanizate (at carbon black 50 phr). D. C. P. curing vulcanizate(at carbon black 50 phr, oil 10 phr) showed that scatter of rheovibron data occurred beneath T_g. This may be caused by the frictional loss of the interaggregates contact. In mechanical properties of vulcanizates initial modulus, ultimate strength arid elonagation are improved as the content of carbon black is increased and as the content of oil is decreased.