Originally Posted by
Drillium Dude
Kinda looks like a thin wafer of fiberglass or fiberboard, you know, the stuff similar to computer boards back in the 60s and 70s?
Probably an early, lightweight, and thin dust shield which appears to have been eschewed on subsequent editions.
DD
their ad reads, “we seal them with Teflon, which keeps out dust and dirt which is the number one cause of bearing failure.”
except Teflon is a coating, so who knows what the actual substructure material is.
I am going to swap them out. Take them apart and report here.