Baby powder works well also to seal the tubeless slicks as well as with tubes, I use a soapy solution on the beads when mounting them here at home on my old manual tire machine, I inflate them to the same circumstance + or -1/4 inch circumference on the O.D. measure in the middle of the tires, inflate them above 15.0 Lb. up to 25.0 Lb. to make them as large as a I can on the O.D. for 3 to 5 days before racing them at the lower race pressures