3926.90.45 - Gaskets, washers and other seals

This HTS category, 3926.90.45, encompasses a broad range of sealing components made from plastics or other materials not specifically covered by earlier headings within Chapter 39. These items are designed to prevent leakage or to seal connections between components, including gaskets, washers, and various other types of seals. Their function is critical in numerous industrial, automotive, and consumer applications to maintain integrity and prevent fluid or gas escape.

While sibling categories at the 3926.90 level may cover distinct plastic articles such as buckets, pacifiers, or specialized medical supplies, this particular code is dedicated to those plastic articles primarily serving a sealing function. The key differentiator lies in the purpose of the article – if its primary utility is to form a seal or prevent leakage, it falls within this scope, rather than categories for more general plastic articles like buckets or handles.

The subcategories within 3926.90.45 further refine the classification of these sealing components. The distinction between "O-Rings" (3926.90.45.10) and "Other" (3926.90.45.90) allows for specific identification of the ubiquitous O-ring seals, which are circular cross-section seals used in a vast array of mechanical applications. The "Other" subcategory serves as a catch-all for all other types of plastic gaskets, washers, and seals that do not fit the specific definition of an O-ring, ensuring comprehensive coverage for this product type.