Help. I'm trying to find a sealing ring for a close coupled WC. No brand on the WC - all I can find is a manufacturing date of Oct 2000 and "Made in UAE" stamped in the cistern. The ring itself is essentially a foam/rubber donut with an OD of roughly 4" and an ID of roughly 2.25". This ring is pretty close in shape but the dimensions would appear to be wrong. A standard 1.5 seal is the wrong profile and too tall and the ID is too small. A 2" seal from B&Q is too big to fit into the recess of the pan. I've tried Plumb Base and Plumb Centre to no avail. Any help would be appreciated. Bucket flushing the WC is not going down well (pardon the bad pun - only sort I do).