Can I purchase graphite plugged bar stock?

With the popularity of graphite plugged bushings many customers are looking for a quick way to machine them from graphite plugged bar stock.

No, there is no such thing as graphite plugged bar stock. A graphite plugged bushing is machined from bronze bar stock. The surface of the bushing is then drilled with holes and the holes are plugged with solid lubricant plugs made of graphite.