Hello Laura,

It’s very unlikely that you will find the original bungs, the design is after all 70 years old. I did search and found two manuufacturers, one of whom offers samples so it might be worth taking measurements and asking both for samples.  Having difficulty copying link. One is Ley Holdings, the other essentracomponents.com. Good luck with your search.

Norman

Laura,

I concur with Norman,  that you are unlikely to find the originals.   But while looking for something else on eBay just now I found some which might suit if they are not too large;    most of them suit a 24 mm hole,  but a few are 18 mm.

https://www.ebay.co.uk/str/callistomarine?_trksid=p2047675.l2563

The obvious disclaimer;   I do not know the firm or the products,  so I can only go from the adverts,  and for that reason this is not an endorsement.   Make your own enquiries.

Hope this helps.

Oliver

Hi Laura,

Looking at Oliver’s link I inadvertedly clicked on a general search and discovered that there are lots of laboratory suppliers on Ebay with solid rubber bungs. Should you choose that option you could secure the bungs by using a sailmaker’s needle to thread a cord through the centre and end it with a stopper knot at the wider end. If you then thread the cord as a loop through the holes in the transom before dealing with the second bung you end up with both bungs hanging secure and always to hand. Just another option.

Cheers, Norman