Any ideas where I can get one of these with 5 holes instead of 6 - approx 62mm outside dia, 42mm inside dia and holes at approx 47mm dia but I could punch these myself if i get a plain gasket.

Thanks
Rescued attachment 30T017A_2.jpg

if you get stuck i may be able to make you one....

You can make new ones of out cork. Many classic cars used cork fuel gaskets. A pack of B+Q cork floor tiles and job's a good'un

why not just repunch the 6 hole version?

or just don't use one of the holes ;-)

Type 9 gearbox release bearing nose support/front bearing cover gasket makes a good one.

thanks guys - think I can sort something from these replies - another minor hurdle overcome!

cheers