On the bottom of the cistern there is a round spongey ring that fits into a hole in the pan to seal it and make it water tight where it joins the pan, do I just tighten the wing nuts up until it is tight or do you get some kind of sealent to put on the ring to help make the seal better. Thank you for any help.
A doughnut washer.
No sealant. Make sure the cistern is sitting properly/squarely on the pan and tighten the nuts by hand. If you get it wrong, first time you flush, a torrent of water comes gushing out from under the cistern all over the floor;-)
You might want to use some sealant on the pipe seals where pipes enter the bottom of the cistern. Try without first, but IME, the holes are not always well enough machined to seal against the supplied rubber washers, so keep an eye out for drips.
The Sponge Washer is only there to guide the water directly in to the top of the WC. It needs no sealant or gunk of any kind. Make sure the washer is placed over the outlet on the cistern, and then place the cistern on top of the WC until the two match snuggly. All the water should actually go down the hole in the WC, but any splash back will be caught by the sponge and prevented from going all the floor.
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.