One aspect relates to a securing element (1) for a push - pull - a connector (100) for connecting the push - pull - connector (100) with a complementary plug socket, comprising:– a cylindrical base (3), which extends from a starting position (ap) extends along a direction of connection;– a cylindrical securing portion (2), wherein the securing portion (2), starting from the base (3) along the direction of the connection to an end position (ep), wherein the securing portion (2) further comprises:– at least one guide wall (5) which, starting from the base (3) along the direction of the connection to the end position (ep); and– at least one spring (6) which, starting from the base (3) extends along the direction of the connection, wherein the at least one spring (6) has a nose (9) and wherein said at least one spring (6) of the at least one guide wall (5) by means of recesses (4) is spaced apart, and wherein the at least one spring (6) in an actuated state of a closure plane (ae), which is orthogonal to the connection direction at the end position (ep) is clamped, or this plane is spaced apart contact.
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