Originally Posted by DangerousDanR

Wrong. Almost all tires today from wheelbarrows to the upper end of construction machinery are TUBELESS, except for a few traditionalist holdouts. Tubeless bicycle tires work just fine at pressures up to 105 PSI in my experience. Putting sealant in tubes for a bicycle is denying that tubes in bicycle tires are an anachronism. Like a tube in a tractor tire.

Putting sealant in a tube will not work as well as sealant in a tubeless tire. The sealant will slowly leak into the space between the tire and the tube. You have two holes to patch. It didn't work very well. At least that was my experience.