Originally Posted by
bulgie
Well I can't say for sure that this particular hub was GreaseGuard™, but the early GG hubs were in fact Hi-E hubs that Charlie deconstructed and modified. How the internal seal worked, I haven't a clue. But this hub could be one of those, and I'm gonna say it likely is, since the person who took the pic and wrote it up says it is. We'll probably never know.
This is good to know! I hope somebody has pictures that show the grease guard zirc/port on hi-e hub because I'd be very interested to see where it's located...