Originally Posted by
jsidney
What came out looks kind of like this. The grommet is a little different in shape and it has a groove around it.
Are you trying to troll us? That's a stem for a tubeless rim. Either way, if a stem broke completely off a tube or you pulled a tubeless stem completely out of the rim, the tire would lose all air. In the case of a stem ripped from the tube, the tube would be toast. Simple as that.