Joined: May 2010
Posts: 591
Likes: 1
From: Bucharest, Romania, Europe
Bikes: 1989 Krapf (with Dura-ace) road bike, 1973 Sputnik (made by XB3) road bike , 1961 Peugeot fixed gear, 2010 Trek 4400
I patched a tractor tube (with an appropriate large patch) that are seriously thick and still holds.
On a bike I doubt you cannot patch a tube (any tube), even tubular tires are patchable (but it's time consuming unsewing/cutting open and then sewing it back and sealing the seam)