3816.00.20 - Other

This HTS subheading, 3816.00.20, encompasses "Other" refractory cements, mortars, concretes, and similar compositions that are not specifically classified under subheading 3816.00.10. These materials are designed to withstand high temperatures and are used in applications where heat resistance is critical, such as lining furnaces, kilns, and other industrial heating equipment. They are typically composed of refractory aggregates and binders, formulated to provide specific thermal and mechanical properties.

This category is distinct from its sibling, 3816.00.10, which is exclusively for dolomite ramming mix. While dolomite ramming mix is also a refractory composition, its specific composition and intended use as a ramming material differentiate it from the broader range of products covered here. This subheading acts as a residual category for refractory compositions that do not fall into the more specific dolomite ramming mix classification.

The subcategories under 3816.00.20 further delineate these "Other" refractory materials. Subheading 3816.00.20.10 specifically addresses compositions based on clay, indicating that the primary refractory aggregate is derived from clay. The remaining compositions, not based on clay as the primary aggregate, are classified under subheading 3816.00.20.50, also described as "Other," providing a further level of detail in classifying these high-temperature resistant materials.