Franz Binder GmbH & Co. has changed the sealing between the cable connector and the panel connector of the Series 420 push-pull connectors. The previous connector did not have a good enough acoustic and tactile feedback required for a push-pull connector. The plug connection has been revised and the feedback has been greatly improved so the user clearly knows when the connection is made.
The old version used an o-ring on the cable connector that provided a radial seal inside the panel connector. The new version will eliminate that o-ring and add a new flat seal inside the panel connector.
The compatibility of the Series 420 connectors, part numbers and prices will not be affected with this design change. The conversion is scheduled for the middle of October. As old stock depletes it is possible to receive mixed versions.