On 16/03/2015 16:16, D.M. Procida wrote:


Unfortunately the damage means I can't reliably measure it, and I've
tried a number of local places. I'm sure the parts information must be
*somewhere* out there...

Daniele

Have you got *any* of it? If so, you may be able to measure the material
diameter (shown as "w" in the Wiki http://en.wikipedia.org/wiki/O-ring),
and then measure the groove it sits in to find the internal diameter of
the ring itself.
--
Cheers,
Roger
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