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 E92 335i, 6MT, M Sport, Le Mans blue - Michelin PSS, Quaife LSD, JRZ RS Pro, JRZ camber plates, Eibach ERS, full M3 susp, custom toe arms, Powergrid end-links, brake ducting, SS brake lines, UUC SSK, ETS FMIC, ER CP, Perf. Exhaust, work by VAC Motorsports