Latching system for a rotary closure

A rotary closure, comprising:

• a plurality of components, the plurality of components defining a plurality of respective keyways, wherein the plurality of components comprises a distal-most component, wherein the distal-most component defines a distal-most keyway of the plurality of respective keyways;
• and
• a turnkey element having an axial portion terminating in a tab;
• wherein the distal-most keyway comprises:
• a lateral keyway portion in communication with the distal-most keyway;
• and
• a ramp, wherein the ramp defines a raised edge terminating in a pocket;
• wherein the turnkey element is disposed through the plurality of respective keyways of the plurality of components such that the tab extends outwardly from the distal-most keyway and is engaged within the pocket to place the turnkey element in a latched position relative to the plurality of components.