Joyce, if you find a source for a Hitachi breadpan seal, or a workaround, please tell me, too! My old Hitachi HB-B101 breadmaker still makes wonderful bread, but (with no breadpan seal) cleaning the pan is a major pain.
I think that all Hitachi breadmakers probably use the same breadpan seals (certainly the HB-B101 and HB-B102 do), but none of the breadpan seals are available anymore:
http://www.abtecparts.com/hitachi.htm
I've had eBay watching for Hitachi Breadpan Seal for several years, and found nothing for sale.
I suspect that some other brand(s) of bread machine (or perhaps some other device) might use equivalent seals, but I have no idea which one(s).
This guy kludged a repair for a different brand of breadmaker simply by substituting a few o-rings -- sounds dicey to me:
http://www.angelfire.com/mech/fixit/oster5839/Oster5839_Fix.htm
If you come up with any good ideas, please contact me at:
http://www.burtonsys.com/email/
Dave Burton
October 2010