The invention relates to an
assembly (40, 50) for a clamping and / or braking device (10), comprising: a housing part (3a, 3b) comprising a connection opening (15) for an interface (II) of the clamping and / or braking device (10) to apply a pressurized medium to a pressure chamber (2) of the clamping and / or braking device (10), and a stepped housing inner surface (17a) defining a stepped recess (17b) in the housing part (3a, 3b) adjacent to the connection opening (15); an
adhesive and / or sealing compound (30); an elastic element (1a, 1b), preferably ring-shaped, comprising a connection seal (20) defining an edge (22) of a sealing opening (23) of the connection seal (20) for fluid connection with the connection opening (15), and a connection protrusion (21) formed along the edge (22) of the sealing opening (23) surrounding at least a portion of the sealing opening (23); wherein the connection seal (20) is positioned in the stepped recess (17) of the housing part (3a, 3b) in such a way that the
adhesive and / or sealing compound (30) is positioned between the connection protrusion (21) and the stepped housing inner surface (17a) of the housing part (3a, 3b).