carb needle o-rings

[Peter Zaborski <PZaborski@calgary.geoquest.slb.com>]

Listers,

Does any one know the dimensions of the o-rings which seal the adjustable
needle screws in the air valve of the later TR6 carbs? These are the o-rings
which seal the dash pot oil chamber. I'd like to get some from a local seal
supplier but have no access to my carbs right now and thus can't tell them
what I need. I think they require inside diameter and outside diameter
(which implicitly gives the cross section size as well). Any help greatly
appreciated.

Peter Zaborski  CF58310UO