Hi Nick,
I've tried the same seal from Vintage supplies and the problem is that the fit on the glass is too loose.
I suspect the same will be true of the Ebay version as well.
I would recommend going with the felt seal as a 1/8" x 1" felt seal is available from Woolies.
[url]https://www.woolies-trim.co.uk/p-1717-black-felt-strip/url]
PS. AE503's window frames are exactly the same section as yours and the felt seal was definitely the one fitted
originally in 1955.
I've tried the same seal from Vintage supplies and the problem is that the fit on the glass is too loose.
I suspect the same will be true of the Ebay version as well.
I would recommend going with the felt seal as a 1/8" x 1" felt seal is available from Woolies.
[url]https://www.woolies-trim.co.uk/p-1717-black-felt-strip/url]
PS. AE503's window frames are exactly the same section as yours and the felt seal was definitely the one fitted
originally in 1955.