I've never used on on the plane but always on my fuel pump and I've never had a problem. I've even pulled a couple tanks out of curiosity and found nothing in there.

One thing to do is look inside your new tank for pieces of plastic from the molding process, bits of paper from the packaging, aluminum or brass flakes form the tubing, or whatever. Flushing them out before assembly with clean fuel or alcohol probably isn't a bad idea either.