Issue with a Cersanit toilet leaking when flushed

[Ommadawn]

Hi there. I have a Cersanit close coupled toilet which as started leaking between the cistern and the bowl when flushed. I've taken the cistern off and this is what I see. I'm assuming the issue is with the silicon gasket (please see attached photos) but can't seem to find a replacement anywhere. Please could someone confirm I'm on the right track and if possible let me know where I can source a new gasket.
Thanks

 

[ShaunCorbs]

Make one out of a bit of foam eg slightly thicker than the existing gasket ?

 

[snowhead]

The leak is going to be on the (rusty ) bolts that hold the cistern to the pan, probably rubber washers either side.
The large seal will need replacing now it's been disturbed as well.

This looks pretty close to what you need

Cersanit repair kit for compact Eko K99-0008

Cersanit repair kit for compact Eko K99-0008

www.mytoiletspares.co.uk

The measurements of the gasket are on this link for the same part number to confirm if it will fit.

Garnitura pentru vasul de WC, Cersanit, compact, EKO, Roma, K99-0008 - eMAG.ro

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www.emag.ro

 

[Ommadawn]

That's just what I'm looking for.
Many thanks.

 

[snowhead]

That's just what I'm looking for.
Many thanks.

The kit maybe available elsewhere cheaper, but didn't come up in any searches I tried with
the barcode 5907536623848 or just K99-0008, not in the U.K anyway.

 

[Ommadawn]

Ok - I ordered the kit which arrived today but the gasket is too long. If I reduce the size by cutting a section out of each side so it fits, is this likely to leak where I've made the cuts (even if I overlap slightly). I can't find any other alternative kits online so am a bit stumped.
Thanks

 

[Basher]

Ok - I ordered the kit which arrived today but the gasket is too long. If I reduce the size by cutting a section out of each side so it fits, is this likely to leak where I've made the cuts (even if I overlap slightly). I can't find any other alternative kits online so am a bit stumped.
Thanks

I would cut it to the right size and glue the cut ends accurately together with waterproof cyanoacrylate adhesive (super glue). You could add a bit of silicone sealant at the joints on the inside when you assemble it, but I think the super glue would aid correctly locating the gasket, and should keep the joints waterproof.