I've replaced all of the parts in the toilet tank. I still have a small leak around the rank bolt. There is no cracks in the tank. I now have a small leak around the new bolt. Due I need a sealant to go around the rubber washer? If so what type of sealent woorks best?

Steve S, December 2005

Just replace with new Donut Washer every time you take tank apart and tighten up wing nut even, other wise it will always leak.

Blodwyn Pig, December 2007

Assuming you are talking about the nut which secures the flush syphon to the tank, standard bathroom silicon is fine. But don't buy the cheap stuff, get acetone based silicon (usually badged sanitary silicon). This stuff smells of pear-drops and nail polish remover, is not water soluable (like normal bath stuff), is a pain to get off your hands and anything else you get it on, but lasts forever.

Unbolt your tank from the pan (assuming its is a close coupled) and unbolt the syphon, stuck a good smear around the thread, both sides of the tank and tighten back up. Then put a good smear on the rubber coupling that sits between the pan and tank, covering the nut ( you have got one haven't you!)

Pete K, January 2006