Wheel bearing unit and method for manufacturing a seal unit of a wheel bearing unit

A wheel bearing unit comprising:

• a first inner ring having a first axial end side,
• a second inner ring having a second axial end side contacting the first axial end side at a joint, and
• a seal unit that seals the joint between the first inner ring and the second inner ring, the seal unit including at least one seal element and at least one further component that exerts pressure on the at least one seal element,
• wherein the at least one further component is at least partially comprised of sheet metal,
• wherein a radial outer surface of the first inner ring extending from the first axial end side is bounded by an imaginary cylinder and a radial outer surface of the second inner ring extending from the second axial end side is bounded by the imaginary cylinder,
• wherein the at least one further component is located entirely outside the imaginary cylinder and comprises a sheet metal ring having a first cylindrical axial end portion, a second cylindrical axial end portion and a radially outwardly extending bulge defining a radially inwardly facing channel between the first and second cylindrical axial end portions, and
• wherein the seal element comprises an O-ring mounted in the radially inwardly facing channel.