Quote Originally Posted by E. von Hoegh View Post
....and in the narrow channels for the back and other places I use black wool.
For the mirror and prism seals, and most uses, I use the foam from Jon Goodman and it seems to be an exact match. But for the back light seals, I'm using black yarn, as E. von Hoegh suggests. I have an original Nikon F from the late 60's that came from the factory with black yarn for back seals, and it is still good as new.