The bowl has come loose from the base of the toilet in my motorhome. The bowl is porcelain and the base (with the flush valve) is plastic. Looks like I will have to remove the toilet and turn it over ...
A wax toilet seal should never be used in an RV. The vibration associated with moving from place to place eggs out the wax, leaving a gap where sewer gases can escape into the RV interior. Always use a rubber seal...