Tuff-Gel vs Tef-Gel

[RyanN]

I just noticed that USS has a product called Tuff-Gel which seems better suited for many rigging uses. Unlike their Tef-Gel, it it an adhesive. I had some bad luck a number of years ago with tef-gel treated fasteners in my windvane vibrating out in the middle of the night.
A called USS and asked about an adhesive version of Tef-Gel. It didn't exist then, but it does now.

Has anyone used it? Or know where to buy it? Is it meant for dissimilar metals?
There's not much info on the web site:
http://www.tef-gel.com/contain.php?param=tuffgel_infor

I'm rebuilding my mast, and I was nervous about using a non-adhesive compound to bed the fasteners.

-Ryan

[Brion Toss]

Hello,
We use both Tuf-Gel and Tef-Gel in our shop, the former as a more-corrosion-resistant substitute for Loctite. Tuf-Gel's tenacity seems to vary more than Loctite's, but is always at least as good as blue, and sometimes more like red. As with red, application of heat will free it up, though you don't want to be standing downwind at the time, as Tuf-Gel's fumes are really, really toxic.
Anyway, we use Tef-Gel for most applications, like machine screws and isolating dissimilar metals, and Tuf-Gel on bolts, mechanical fittings, and furlers -- anyplace where vibration, torque, or anything else might cause things to come unscrewed. I have never seen, for instance, firmly-made winch or cleat fasteners back out when Tef-Gelled.
Fair leads,
Brion Toss