I stand corrected. It is indeed Cummins. If I could post a picture, I could show that it is in fact the clasp band on a valve stem seal. Some on a used head I have are shiny and some are orange. How it found its way to the pan is anyones' guess. The seal may or may not be in place but it can be changed from the top side. Roll the appropriate piston to the top and unclasp the valve. I suppose it will be necessary to remove each of the valve covers to find the right one.
James
James