8484.90.00.00 - Other

This HTS category, 8484.90.00.00, serves as a residual classification for gaskets and similar joints that do not fall under the more specific subheadings within 8484. It encompasses a broad range of sealing components designed to prevent leakage between mating surfaces, typically under various pressure and temperature conditions. This includes specialized gaskets and joints where the precise combination of materials or construction methods prevents their clear assignment to the other designated categories.

It is crucial to distinguish this "Other" category from its sibling classifications. HTS 8484.10.00.00 specifically covers gaskets and similar joints made from metal sheeting combined with other materials or constructed from two or more layers of metal. HTS 8484.20.00.00 is reserved for mechanical seals, which are complete sealing devices incorporating multiple components designed for rotating shafts. Therefore, 8484.90.00.00 is intended for items that exhibit gasket-like functions but do not conform to the material or construction criteria of these more narrowly defined categories, such as pre-cut sets or assortments of dissimilar gaskets offered in specific packaging for sale.