Here is the inner liner from the UV5. The small tube is quarts and is cemented to the plastic flanged piece. There is an o-ring that seals the plastic flanged piece to the UV5 body and another that seals the lid to it.
The white area is the cement.
Here is a sketch that might help you...let me know what other dimensions you need. I got lazy drawing the socket b/c it has a lot of detail, but the dimensions are correct.
edit: Are these 800 pixel width pictures too big for this forum?