Any 2 dissimilar metals will eventually seize. With that said and to answer your question. When I install a BB I wrap the threads with Teflon plumbers tape. I have not had a problem with my BB's seizing. I have worked on some bike that did have the BB seized. Looked like the threads were not treated with anything, just installed dry. Any new BB you get will have a small amount of grease on the threads from the MFG.