Patent ID: 8371621

Claim:
A fitting connection for a capillary comprising: a tubular sealing bushing, a compression bushing and a backing bushing, the backing bushing having a bore for receiving the sealing bushing and the compression bushing such that the sealing bushing is completely inserted into the bore and backed by an inner wall of the bore, the sealing bushing and the compression bushing being each provided with a central bore for feeding through a capillary tube, wherein an end of the bore of the backing bushing has a partly slightly conical shape for compressing the sealing bushing such that an inner wall of the central bore of the sealing bushing exerts a surface pressure in a radial direction onto an external wall of a capillary end within a contact area between the external wall of the capillary and an inside surface of the central bore, wherein, by being pressed into a receiving bore in a stator plate, the fitting connection further comprises an assembly comprising the backing bushing and the sealing bushing pressed into said backing bushing, wherein said assembly includes a flat frontal surface avoiding a dead volume in an interface area between the front face and a bottom of the receiving bore, and wherein said flat front face of the assembly is formed by flush front faces of the backing bushing, the capillary and the sealing bushing abutting with a bottom of the receiving bore, respectively.