Retaining ring, arrangement and method for installing the retaining ring

A retaining ring for securing a component, comprising:

• a ring segment having an outer circumference for fixing the retaining ring in an axial direction, and
• a recess extending along a circumferential direction of the ring segment, and
• a closure element for releasably closing off the recess,
• the ring segment forming a contact surface to fix the component in the axial direction, and the retaining ring having a locking device provided on the closure element for locking the closure element in the recess,
• wherein the ring segment and the closure element form a circumferentially closed ring body after the closure element has been inserted in the recess of the ring segment, and
• wherein the locking device is concealed by the closure element and the ring segment on a side of the retaining ring facing away from the contact surface, and the locking device is further concealed on an inside of the retaining ring, wherein an upper surface of the locking device is engaged with an upper surface of an undercut located in the recess, such that the locking device is inaccessible from a top side of the retaining ring facing away from the contact surface or on an inside of the retaining ring after installation of the ring segment and the closure element.