Geberit mechanism basin profile seal Ø 68x46 – Ref 240.282.00.1 – Built-in WC Sigma 12 UP300, Kappa 15, Delta 12, Twinline 12 and 8, 110.620 / NUVO, 10.400, 10.800

This is the symptom requiring replacement of theprofiled joint:

Symptom:
It's squashed. This seal is the most vicious I know... It looks like it's in good condition. To understand, you need to have a new seal next to it. Let me explain: the profiled seal (when new) has a well-flared outer lip. This allows it to be perfectly watertight when installed at the bottom of the tank. But over time, the lip squashes against the basin (white basket on which it is installed), letting water through and creating a leak in the bowl. This phenomenon is accentuated with limescale. It's quite simple, I recommend replacing this seal at each maintenance.

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This Geberit seal is installed in built-in cisterns (wall-hung toilets):
Sigma 12 UP300, Kappa 15 UP200 / UP120, Twinline 12 ST - DT, Twinline 8 DT, 110.620 / NUVO, 10.400, 10.800

Manufacturer reference:240.282.00.1
Outer/Inner Diameter: 69mm x 46mm