Cistern Coupling Rubber Doughnut Thingy .

Jun 04, 2006 4 Replies
S

Having replaced my toilet pan with a new one that someone gave me on Freecycle and reused the rubber seal I had on the cistern ,now when I flush the cistern there is a little water comes from the seal area below the cistern and drips on to the floor . I had also ordered a replacement inlet valve and also a replacement cistern coupling kit .The replacement pan had some silicone around it's inlet so I have removed that but was wondering if the silicone is necessary to ensure a complete seal. Can anyone offer an opinion .?


Stuart


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P

Regarding the pipe that carries water from the cistern to the back of the toilet bowl, in my experience both ends need sealant to get a water-tight joint.

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A

If this is a close-coupled system, then you need only a new Doughnut seal -- they rarely work when reused as they will have taken on a fixed shape in their previous life. No silicone required there.

I have sometimes had to use silicone where pipework goes through the cistern and the nuts/washers won't seal because the porcelain surface around the hole isn't flat/smooth.

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R

It's not a good idea to re-use the doughnut seals. They get deformed when fitted, and are unlikely to seal properly when re-fitted. They're fairly cheap to replace, and there's no need to use any sealant on a new one.

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S

Cheers Roger and Andrew ....

Ah ..That'll be the problem then..re-using the seal on the replacement pan.. The new one will be coming tomorrow so that should sort it .

thx again.

Stuart

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