Sealant For A Leaky Centerline Wheel ?

Watch the center bead ,between the rim halves.. Not often, have seen it happen. Avoid tubes on radial tires,if possible.
https://www.google.com/url?sa=t&sou...FjALegQIBRAB&usg=AOvVaw0xL90qzK0T4cvGRQhE_z-X
Go old School : tire tank that wheel ,with an installed tire ..Be patient , see if BUBBLES leak. Very few tire people research anymore...... ..."replacement ,instead of finding the real problem ... "What size rim ,and what tire ,size...?