Never ever ever use ArmorAll or anything similar for your drytop gaskets. It has petroliates that will ruin your gasket very quickly if not instantly. Trust us using nothing at all is better than using ArmorAll.
To protect your gaskets and other rubbery implements use 303 to keep them supple and protected.
Protect and restore all your vinyl, gel-coat fiberglass, rubber, plastics and leather with 303. Engineered for aerospace and aviation applications, this is the world's highest-rated UV-screening product. It offers 100% prevention of UV-caused slow fade, and it restores lost color and luster on items that have already faded. It's not oily or greasy, so it won't discolor or stain. Prevents dust, soiling and staining on all kinds of surfaces. For use in automotive, marine and RV applications, and even pools.
Here is a hot tip from your buddies here at the kayakoutfitting.com team: Write your name on the bottle with a fat marker and it will help keep it from wandering off to your buddies gear bag.
SHIPS BY GROUND.
Even though it is not flammable, is non-toxic, and is biodegradable we will ship 303 by ground even if you choose Priority Mail for shipping. It is still a liquid and the Post Office folks have a tendency to put shipments with liquid in purgatory and then eventually loose them. Marking them as a potential hazard and sending via ground actually gets them to you smoother.