I have been attempting to install a new siphon flush but it kept leaking. In attempting to fix the leak, I have wrung the first one but have got a fresh one to try again.
The only thing I can think of is that either the silicon sealant is incorrect or the rubber washer is the wrong way around.
The sealant is tec7 (https://tec7.ie/product/tec7-sealant/) which should be ok which leaves the rubber washer.
It has a serrated edge and a flat edge.
Does anyone know which face of the washer should interface with the actual toilet cistern?