Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Thank you @Paula for the Sunday reply - I have that part number saved away now.  If the Amazon spring kit is a fail, I'll get those.  BTW, did you find they gave the appropriate pull on the seal?

Of the 5 the stacks I have, one only really seals under pressure properly and that has the original spring. The others are either missing parts, broken or steel (rusted) replacements.  I have new #6 brass screws and #91195A120 McMaster-Carr seals for all of them, so many thanks for that part number on the seal.  In theory once these are rebuilt, they should last longer than the original Empire parts.

I am going to be one stack short as it is, though I am not so sure if I'll get the No 90 running - it has been bad luck every step of the way.  The 6mm Borosilicate glass tubing I got off eBay ended up being a perfect fit but I have had to fall on using Teflon tape wrapped around the glass (a suggestion from @komet163b ).  Even if I get it working the tank is going to look fugly with all the soldering I have had to do (but someone did a lot before me - so I don't feel so bad about it).  But we'll see once I get the 110w Cartridge Heaters in, so I haven't given up.


Oh - what did you end up using for a bottom seal?  Nothing that I have bought locally is really holding well (the rubber squishes is too much).  Finding seals with fiber reenforcement has been a bust.  I have these hard paper ones but they aren't so good for the stack.