50mm/2" ring seal - where to buy from?

[Onum]

Hi, I need to replace a worn ring seal on a 50mm OD waste pipe (it connects to a built in toilet cistern) but can only seem to find 1 1/4 and 1 1/2 seals not 2"

Are they an odd/specialist size? either I'm searching for the wrong thing or they don't seem to exist :-/

Any pointers appreciated.

 

[footprints]

http://www.bes.co.uk/product/130a~PL~2522~2522~-Boss-Adaptors--Rubber--Push-fit-.html

Any help?

 

[buck51]

Think flush pipe.

 

[Onum]

"Flush Pipe" well now I know! thanks, that's helped enormously