What's this I see?

[Badgerchim]

Inspired by the great results shown in the pictures, i am half way through the same process. My stearing rack is out and getting a clean and polish and noticed there is no dust seal as shown below. I believe some came with, some without. Are they still available? Had a look at the usual parts suppliers but couldn't see one. Ta

[ClassiChimi]

I'm not sure if you can still get the dust caps! Hopefully someone more knowledgeable will be along to answer shortly
If this has inspired anyone to do this is I'm very pleased.
Thanks for the vote of confidence.
Take loads of pictures is my main advise.