Feedthrough assembly

A feedthrough assembly comprising:

• a sealing member comprising a body part having a sealing member aperture extending through the body part in an axial direction of the body part;
• at least one elongated member extending through the sealing member aperture, and being sealed to a surface of the sealing member aperture;
• wherein the feedthrough assembly comprises a feedthrough member including a body part having a feedthrough aperture extending through the body part in an axial direction of the body part, the feedthrough member being adapted to be attached to a wall having a through hole such that the feedthrough aperture and the through hole together provide a passage through the wall, and the feedthrough member is adapted to receive the sealing member in the feedthrough aperture to an operative position in which the feedthrough member is rotatable relative to the sealing member, and a gap between an outer surface of the sealing member and a surface of the feedthrough aperture is less than or equal to 250 micrometres;
• wherein the feedthrough assembly comprises a retaining system adapted to retain the sealing member in the operative position by preventing an axial movement between the sealing member and feedthrough member;
• wherein the retaining system comprises a retaining member adapted to co-operate with the feedthrough member for preventing the axial movement between the sealing member and feedthrough member in a first axial direction, and a retaining projection provided on the surface of the feedthrough aperture for preventing the axial movement between the sealing member and feedthrough member in a second axial direction opposite to the first axial direction;
• and
• wherein the retaining member is a locking ring.