Products containing asbestos: Erkote 2X, 3X, 4X & 5X as well as Erkote Mica Mastic. ERKOTE Technical Coatings catalog (1953). "Erkote Mastics are a composition of synthetic rubber, synthetic resins, gilsonite and blended asphalt scientifically plasticized and "Millimized" with reinforcing inorganic fillers such as mica or asbestos.".
eBay