I am assembling the cutlass and bearing onto the flange on the top of the stern prop tube. Here is the whole intact assembly:
The next pic is a view pulled apart showing the cutlass and its flange
The last pic shows the stern tube flange. It has a groove where the two flanges meet. When I disassembled them there was some silicone in the groove. I doubt it was water tight. What is supposed to go there an o ring? or would gasket maker permatex work?