Dry lubricants reduce friction between moving parts without liquid. These substances, also known as solid lubricants, coat surfaces of rollers, gears, chains, and gaskets with a dry film or powder that helps reduce wear and tear on mechanical equipment. Dry lubricants are a good choice for dusty environments because they resist grime. Dirt and dust don't stick to the dry lubricant and create grime or wet residue on equipment. Dry lubricants withstand high heat and won't break down to a residue that drips.