The specification of this part has changed.
It is now a metal strip rather than a plastic cup, however this new part will not fit into the existing handle, therefore you would also need a new style handle 5-6-M10568.
These parts are only suitable for the following models
(if your model number is not listed, please contact customer service).
When fitting this new part, please discard the large metal washer that sits just under the vent tube.