Weapon name: Nonflammable coating mixture
Description: It's a transparent substance made out of 3 different elements which are: Sand, polyurethane and carbon tetrachloride. When mixing the correct amount and processing it with certain heat process you get this substance which is like a paste and can be applied to different natural materials. The transparent coating makes the item nonflammable and it doesn't transfer heat along it. Even if it is touching something really hot it won't get heated up.
On the request of mr. Shadow I made this "weapon" here.