Many rubber articles classified under this NAICS grouping are subject to Section 301 tariffs when originating from China. Importers should verify the applicable HTS subheading at the 10-digit level to determine whether their specific product is covered and at what list tier, as coverage and rates vary by product line.

Composite articles containing rubber alongside metal, textile, or plastic components may be classified outside Chapter 40 of the HTS under the essential character or specific use rules. A licensed customs broker should review the construction and primary function of the article before filing entry to avoid misclassification penalties.