This could be a little off the topic, but I had a leaky (very slow
leak) flush valve with TWO different new toilets. Depending on the
configuration, it can seem like the leak is around the tank bolts when
it's really the flush valve. One of the toilets was cheap and one was
a high-end brand. Technical support said a porcelain burr might have
kept the flush valve at the bottom of the tank from seating (clamping)
properly and that the foam rubber ring IS NOT A SEAL, but rather only
deflects splashing when flushed. The ring won't stop leakage from the
seam of the flush valve.
In both cases, the solution was to remove the tank and dry it out with
a hair dryer completely and apply GE Silicone II sealant around any
possible leakage seams of the flush valve (including threads) outside
the tank, and if you can reach, inside the tank too.
Just be sure you don't accidently get any sealant where the flapper
firstname.lastname@example.org (barry martin) wrote in message