HELP - Cragar SS Lug Nut Washers Keep Crushing - Need Alternatives!

There should be lettering on the back of the rim. If so, call or write Crager - assuming they are Cragers. I suspect RRR correctly identified the rim, but verify. If the rim wsa made for conical seat, then that's what you need to use. The manufacturer will have that info. And if you think it was mismanufactured, send 'em photos.