Hi there, I don’t know whether the funeral home will be honest with you, but we can hope so. You’re right that a sealer is exactly the kind of casket you *don’t* want in a mausoleum. Or, you could give the funeral home and mausoleum permission to not to lock the lid down so that air can get in (but yes, the extra expense of a sealed casket is a waste of money). If you go to funeral home and mausoleum to ask, please come back and report what they say!