Its 1300 on a Sunday afternoon and your after a 0 ring to suit a Victa 2 stroke lawn mower.
You've got to be kidding right?
So walking around the hardware store looking (and not finding) a oring with a ID of 28mm i came across giant orings to suit a toilet.
Cutting it may work, but i'm crap at cutting circles with any accuracy. So i went with plan b.
Back to mowing the lawns.
Till next time.