[LEAKYSEALS951]

My first concern is that if you superglue it, keeping the cyanoacryate/ fumes away from the windscreen. If the entire wiper assembly cannot be safely removed, I would shim a piece of aluminium foil between the wiper and the window before gluing. I would also secure the broken piece in place before gluing, so you would only be gluing it, not trying to manipulate it when it comes time to bond. I would not drop superglue on it, I would drop the glue (whatever bonding agent it is) on a block of glass or something, and use a pin tip to pick up an even smaller drop to then apply to the wiper.

The rubbery feel scares me. Makes me wonder if crazy glue is best answer.