The new sink looks lovely etc, but the overflow connection is useless. The sink has a row of vertical slots in it. The connection is a rectangular piece of plastic with outlet that has a rubber seal sandwiched between it and the outside of the sink. There is a single screw in the middle holding it together.
When I fitted it I just knew it would not seal, and of course it does not.
This is not helped by the connection to the trap with a flexible corrugated pipe that when bent round exerts quite a bit of force on the overflow connection, tending to pull it away at the base.
The rubber seal is supplied in flat and curved, and yes I am using the correct one (flat).

Ideas to sort this out :-

1. Find an elbow to put in the pipe so the force created by the overflow pipe is removed.

2. Glue something on to enable a better fastening than the single screw in the middle.

3a. Silicone both side of the rubber seal ? Will silicone stick to the rubber - I doubt it.
3b. Remove rubber seal completely and bed the whole thing on something that will stick to metal, plastic and set but remain flexible - does plumbers mate set ? Maybe just silicone ...

Any ideas ?

Simon.