This is what I'm running these days on all my mountain bikes:
Ingredients:
- Moldbuilder Liquid Latex (http://www.eti-usa.com/consum/mbldbar/mldbldr.htm)
- Your favorite tube sealant. I like Flat Attack, 'cuz it's not as bright green and there's better particulates in it (little fibers)
- Ammonia (I use ammonia-based windshield wiper fluid)
- Particulate matter: I like finely ground tire rubber and glitter.
For one tire:
- Two "blops" of liquid latex. This is probably like 2tbs or so. Go heavy the first time you seal a tire -- this is what seals the sidewalls.
- Double that amount of tube sealant.
- That amount, again, of ammonia (so 1:2:2 of latex:sealant:ammonia)
- A tablespoon each of tire rubber and glitter.
Mix thoroughly. You should have about 2/3-cup of liquid ready to dump into the tire. 16tbs per cup, right? so...
2tbs latex
4tbs sealant
4tbs ammonia
+particulates