ExBar 4 Barium sulfate Excalibar Minerals Extenders / Fillers >> Barium Sulfates ADHESIVE SEALANT Barium Sulfate used widely in non-sensitive color applications such as energy exploration, rubber products, automotive sound deadening of plastics, friction, metallurgical and refractory products. Excalibar Minerals' Barytes products are manufactured from a high quality natural barium sulfate ore. Our products are processed in our plants in Houston, Texas and New Iberia, Louisiana to control quality and consistency needed for use in paints, plastics, rubber, adhesives, sealants, caulks and other industrial applications. Barium sulfate. Possesses high quality. Used in adhesives, sealants, caulks and other industrial applications. Suits for non-sensitive color applications.