One of the nylon grommets on my Countrywide (no longer trading) petrol
strimmer has gone AWOL. This means that the line only lasts seconds, before
it snaps off. The hole in the spool where the line exits, is 10 mm.
The grommet in this pic gives an idea of shape, but would need are larger
flange - to prevent escape again:-
http://preview.tinyurl.com/6ecvhku

Any ideas where I could get a general purpose grommet that would do the job?
Probably worth the risk, but strimmer unuseable at the mo. TIA
Bertie