Abstract: A pair of aligned tandemly attached locking elements are cantilevered from a stud and a socket are hinged together to be placed in an engaged first locking mode with the outermost one of the locking elements. The elements are secured to the stud such that an axial separating force on the stud and socket for disengaging the locked engagement causes the engaged locked element to sever from the seal, and the other second intermediate element remains attached to the stud so the seal can be used with the second element in a second locking mode. A stop is provided for preventing insertion of the second intermediate locking element into engagement with the socket in a lock condition when the first locking element is attached to the stud and locked to the socket.