Investigation of the crosslink structure by using 2,3-dimethylbutene-2 (DMB) as a model showed that 1,6-bis(N,N-dibenzylthiocarbamoyldithio)hexan (Vulcuren(R) VP KA 9188 of Bayer AG) forms novel carba-sulphane crosslinks. The thiol-amine swelling technique for determination of crosslink density and sulphur crosslink structure was used to show that Vulcuren results in short sulphur bridges in comparison with a semi-ev vulcanisation system. The alteration of the crosslink structure and the crosslink density after overcuring is less for the compound with Vulcuren. The performance of the bifunctional crosslinker has been investigated in terms of static and dynamic properties in a carbon black-filled NR compound in comparison with a conventional and semi-ev vulcanisation system and also in a silica-filled S-SBR/BR compound. The outstanding performance of the Vulcuren-containing system can be seen by comparing the rheometer curves. The reversion tendency is almost nit while the rheometer torque of the other reference compounds decreased considerably. By adjusting the sulphur level, the physical properties (tensile strength, hardness, modulus, etc.) of all vulcanisates are very similar after optimum cure. However, if the same compounds are overcured, a significant improvement in the retention of physical and dynamic properties can be seen for the compound containing Vulcuren. The improved compression set values indicate that the network alterations (S-x rupture and formation of shorter crosslinks or cyclisation) at high temperature are considerably less when Vulcuren is used.