I have a Longwood Dual Furnace, series VII, Ser. #24602. The large door needs an asbestos gasket, item #16, Part #D6. Do you know where I can get this part?
This may be too late to do any good but I just found out that Equinox Manufacturing has Longwood grates and damper motors. I think they have gaskets too. Their phone number is 718-589-6365