Abstract: The use of a sulphur-free and low-emission elastomer blend which has properties of various rubbers, and the mechanical properties thereof are improved, in particular, in relation to the permanent set (DVR), elongation at rupture, tensile strength and/or gas permeability (permeation) in relation to the individual compounds, and it also has an improved temperature resistance and an improved resistance to media. The elastomer blend also includes a rubber having at least two functional groups which can be cross-linked by hydrosilylation, at least one other rubber comprising at least two functional groups which can be cross-linked by hydrosilylation. The rubber is chemically different from the rubber and a cross-linking agent includes a hydrosiloxane or hydrosiloxane derivative or a mixture of several hydrosiloxanes or derivatives, which include at least two SiH groups per molecule in the centre, a hydrosilylation catalyst system and at least one filling material.