It doesn't say what exactly it is in the company literature but one online seller states it is a moisture cured urethane (MCU). I used a quart of Famowood MCU a few years ago and it worked OK but like any MCU, it is hard to store without beginning to cure. It will also bubble if allowed to pool anywhere on the lure, so it's best to just hang a lure up after dipping and let it any excess drip off the tail of the bait. The Famowood I tried was a little thicker than Dick Nite S81 and I did not think it had the clarity of Dick Nite - but it was clearer than most epoxy topcoats.
Not sure what I used years ago is the same exact thing as the Dura-Tuff, but I suspect it is. JMHO, none of the commercial floor MCU's are quite as good as Dick Nite S81. But they are considerably cheaper.
Edited by BobP, 02 March 2013 - 10:46 PM.