sandstrom9a-xf dry film lubricant from skygeek is dark gray in color formaximum visibility. the lubricant goes on easily and dries to forma thin layer on the surface of the component you are trying toprotect. because the dry film lubricant requires the addition ofheat to cure, the lubricant has a long working life and can bethoroughly spread before curing. heat cured lubricants are idealfor use in extreme environments or in projects that re placements. the lubricant is sold in a gallon-size can forthe best value.