Gaskets for Lionel smoke unit

If you can't get a replacement part, the gasket you listed that seals the smoke unit chamber looks easy to fabricate from gasket material available at any auto parts store. But are you sure that's where the fluid is leaking from? My first suspicion would be the stack area, which you asked about. One (or more) good old postwar smoke unit gaskets might do the trick there, and I know these are available from any parts dealer for like 50 cents each.

When I do upgrades, I use a brass tube that just fits inside the stack (I sometimes enlarge the stack ID) and it's soldered to the smoke unit ferrule, no chance of smoke leaking.   I agree with Jerry, that's probably where the leak is.

Thanks John & Jerry for your suggestions.  I agree that the most likely place of the leak is in the stack area.  What  ordering information is there for the brass tube and best place to order from?

 As for the washer, I will look for a parts dealer, but has anyone tried a rubber washer used in water faucets?

Thanks,

Bob D

Bob, I keep an assortment of brass tube sizes on hand so I have the right size to create stacks for smoke units.  I bought mine several years ago, and I just did an Internet search.  You have to determine exactly what size will work for your situation if you aren't going to stock a bunch of sizes.

Bob, Check with Micro Mark.  They sell a 1 pound pack of assorted diameter and length, brass tube and rod pieces for $26.00.   Earl G.

I can tell you there is a "sweet spot" of sizes that you'll likely use the most for the stacks, they hover around the 1/4" through the 5/16" range.  I haven't gone and measured the ones I've used most frequently, but I have a number of sizes I've never needed.  I figure someday I'll need some brass tube of the unused sizes.