I have a set of fikses apart now, and as u can see there's no sealant between the center and the rim halves. I've refinished dozens of 3 piece wheels and the only time I've encountered any sealant on the center to the rim half itself is when someone improperly applied the sealant. The seal is between the rim halves and not between the center and the halves or "barrels "
. If you are just removing the centers and not taking the halves apart you can accomplish it with the tires on, air out
