Barite also is used as a filler, extender, or weighting agent in products such as paints, plastics, and rubber. ... Imported and domestic barite, crushed and ground, sold or used by domestic grinding establishments. 2. Includes data for the following Harmonized Tariff Schedule of the United States codes: 2511.10.1000, 2511.10.5000, and 2833.27. ...