Often used in assemblies that rub against each other, this powder blends into plastic, rubber, composites, and lubricants to keep them from sticking. Because it is slippery, it decreases wear and dissipates heat caused by friction—it will not break down in extreme temperatures. It repels water, which keeps rust, dust, and debris from building up and causing abrasion between moving parts. This powder won’t react to most corrosive chemicals, but it will break down when exposed to alkali metal.