O ring for Touchdown fillinf system. Source?

[Fountain Pen Mike]

I'm trying to restore a Sheaffer Touchdown, and need the internal o ring that seals the workings so that there is pressure in the system.
Anyone know wher I can get them?

[Jon Szanto]

Pendemonium and Anderson Pens sell kits for Touchdowns and Snorkels (all you need, which may include o-ring(s), point seal, sac). Don't know it they are broken out into kits, but you could also get them from Dale Beebe at pentooling.com, and David Nishimura sells them, I believe, at his vintage pen site.

[Fountain Pen Mike]

Thanks. Anderson it is! Much appreciated.