Sealant inside cistern

[bettz1]

I'm in the process of putting the toilet back in and noticed the silicone or sealant that was around the flush valve is peeling away.

Can I put abit of 820 sanitary silicone around it and leave it 24 hrs to cure?

 

[Scally-Ho]

You can try anything, but IMO it is always better to start afresh with clean surfaces and a new sealant of your choice. My choice would be Goldend Paste

Chesterton 900 GoldEnd Paste

Non-hardening, non-corrosive, moldable PTFE thread sealant and lubricant for the most difficult of sealing demands on pipe joints, pneumatic fittings, and hydraulic line applications.

chesterton.com

 

[accelerator]

I would remove the flush valve, remove the old silicone (might have to cut it away) and then reinstall with fresh silicone.

 

[HERTS P&D]

You don't need silicone.

Andy

 

[bettz1]

Tbh I think I'm going to buy another fill valve with a brass connection I'm having no end of trouble trying to reconnect it, it keeps going on at an angle no matter what I do I think the threads worn.

 

[HERTS P&D]

https://www.screwfix.com/p/fluidmaster-bottom-entry-brass-shank-fill-valve-1-2-/47792?gclsrc=aw.ds&gad_source=1&gad_campaignid=22599672207&gbraid=0AAAAAD8IdPy3cvQ6L7prazu-tdMSZQPmz&gclid=CjwKCAjwiY_GBhBEEiwAFaghvmiufGcu5L6XsST2yx5vibFlgDcdHhY0yZ89JnpFuJ9V2LE8ZVCk2hoC1loQAvD_BwE

Andy

 

[bettz1]

https://www.screwfix.com/p/fluidmaster-bottom-entry-brass-shank-fill-valve-1-2-/47792?gclsrc=aw.ds&gad_source=1&gad_campaignid=22599672207&gbraid=0AAAAAD8IdPy3cvQ6L7prazu-tdMSZQPmz&gclid=CjwKCAjwiY_GBhBEEiwAFaghvmiufGcu5L6XsST2yx5vibFlgDcdHhY0yZ89JnpFuJ9V2LE8ZVCk2hoC1loQAvD_BwE

Andy

Yes that's the one I'm going to pick up.

I'm wondering if the doughnut washer needs changing,i think it's 4 & 1/2". I can't find that on screwfix.

 

[Mottie]

Trim it off around the flush valve. I had problems a couple of weeks ago with my flush valve - it wouldn’t stop trickling. I bought a new one and just changed the top half - made no difference. On closer inspection, a slither of silicone had come away, was still anchored at one end and was preventing the seal from doing its job.,

 

[blup]

I'm in the process of putting the toilet back in and noticed the silicone or sealant that was around the flush valve is peeling away.

Can I put abit of 820 sanitary silicone around it and leave it 24 hrs to cure?

View attachment 392554

Scrape it off and use the rubber seal. If not practical just load more sealant on

 

[HERTS P&D]

https://www.amazon.co.uk/Armitage-Ideal-Standard-Doughnut-Coupling/dp/B00JJRSQE2/ref=asc_df_B00JJRSQE2?mcid=425e95b28e87340d90dec8ade0f651ab&hvocijid=9807431702494749277-B00JJRSQE2-&hvexpln=74&tag=googshopuk-21&linkCode=df0&hvadid=696285193871&hvpos=&hvnetw=g&hvrand=9807431702494749277&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1006625&hvtargid=pla-2281435177378&psc=1&gad_source=1

Andy

 

[HERTS P&D]

I would also replace the flush valve:

https://www.screwfix.com/p/fluidmaster-push-button-cable-dual-flush-valve/51173

Andy