Joined: Nov 2017
Posts: 93
Likes: 39
From: A Dutchman in Budapest, Hungary.
Bikes: Koga Miyata GranTourer 1985, Koga Miyata Adventure 1992, Cinelli Sentiero, Giant Terrago 1993, Presto Amsterdam 1975(?), Dahon Classic III Stainless
I would not worry about a 1mm gap. That's actually pretty good, most bicycle hub dust seals are worse, especially the vintage ones. Not a problem if you regularly (once a year or so) clean and regrease the bearings.