It's probably epoxy used to seal up floors. You give it a coating in epoxy (or usually polyurethane) and it becomes ultrahard and scratch resistant.
You may want to try it on something else before you slop it onto your pep armor, as it may be slightly brittle or runny.
since it's usually more expensive then polyester (which is dirt cheap to manufacture), maybe you just want to opt for that and save the epoxy for floors?
