Thanks. I saw those, but wasn't sure they would work since they aren't the "taper" shape ones... I think we may be talking about different washers. I am talking about the little white nylon flared ones that go inside of the MFL connectors.
Oh I see. Yeah these are not what you need. You are looking for the plastic inserts that go between a ball lock and an MFL. I don't know if mcmaster carr sells them. Most homebrew shops sell them and online homebrew shops. Have you checked there?