a rubber sample based on a br-nr blend used as a damping element , was tested in this figure (single cantilever, 2 k/min, 1 hz,4.9x4.9x2.15 mm ). the glass transition of br (onset of e' at -99.3 ) and of nr (onset of e' at -60.7 ) are detectable. the temperature range for the application of. parts made of this vulcanized rubber is above the highest glass transition.