An extremely durable rust and corrosion inhibitor. Resists chipping and will not crack or peel with age. Elastic and waterproof. An asphaltic, rubberized undercoat for use on cars, trucks and tailers, etc. To prevent rust and deaden sound. Paintable undercoat leaves a firm, black, resilient, rubbery texture which will provide years of protection. Additional applications and uses: on trucks, farm and construction equipment, in collison shops, as a tree wound dressing, and gutter and flashing sealer. Seals electrical boxes and fittings. Seals concrete and asphalt driveway cracks.