Thanks! I just disasssembled my steering rack (also ZF) and can confirm the dimensions of this TGY seal. Seems like a standard BASL 20x30x5.

The part number posted by dikidera seems to be far too large for the ZF top seal.

Saw your post here: https://www.matthewsvolvosite.com/forums/viewtopic.php?p=660483#p660483

The part number you gave, is it the seal that sits on the bearing, or the upper seal?

I'm also looking for the correct ...