Ok, so here is a model.
It has the curved surfaces (done as accurately as I could do). The diameter, height, and thickness should be correct, but the curvature may not be.
The file is a .STEP so you should be able to import it into any CAD software. Let me know if you need a specific file type.
(I think you'll just need to right click and 'Save As')
http://dl.dropbox.com/u/99956340/Fri...urvature).STEP