Gilsonite is a key ingredient in our products. It differentiates Asphalt Systems from others, it is a trade name for Unitahite or Unitaite. It is a hydrocarbon-bas- ed mineral product. Until recently it wasn't considered a coal, oil product, or asphalt. Now it is recognized as an asphalt.Today gilsonite is used in the electrical industry.It is still used to line pipes and tanks because of its resistance to chemicals. It is used to insulate underground pipes for steam and hot water.it is olso uses in ink paints and varnishes