I use standard paint sealant on my wheels and haven't had an issue. I clean the wheels thoroughly (off the car) then apply Chemical Guys' EZ Creme Glaze and Blackfire Wet Diamond sealant. Very easy to clean wheels afterwards.
2011 BMW 335i E92 - Le Mans Blue, 6MT, M Sport. JRZ RS Pro, Quaife LSD, BMW Perf Exhaust