The seals on the return are the ones that it came with. The bulkheads I had some trouble with because I ended up buying the wrong type. I also had to use a ball valve instead of a gate valve for the return line. I'm regretting this now because it's very hard to get the level in the overflow where I want it. I hope the valve loosens over time becuase it's hard to fine tune.
Other than that for my first plumbing job I'm very pleased.
Here is a picture of the sump area.
I hope I plumbed right considering there is almost zero room in there.