Ok...there is an o-ring between the valve guide and the chamber sleeve,there is also an o-ring on the chamber plug(this is the part that the 12 gram seal sets in)..
And the gasket between the nut and the valve is made out of LEAD...is very soft and not reuasable once removed...the reason they did this at the factory was to use it as a form of LockTite...it is not really nessassary to replace this when putting back together the guts,just snug the retaining nut real good and you won't have any problems...
And when handeling the LEAD gasket,be sure to wash your hands befor you eat your buggers,ahh err lunch..Lead poisioning is not a nice thing....