Hookahs and water pipes used for smoking are generally classified under heading 9614 as smoking pipes. However, the specific tariff-line treatment can vary depending on construction and materials, so importers should verify the applicable 10-digit HTS number and any associated admissibility requirements with CBP.

Replacement stems, mouthpieces, and other components specifically designed for smoking pipes or holders are classified as parts under 961400 along with the finished articles. They do not migrate to rubber or plastics chapters solely because of their material, provided they are identifiable as pipe or holder parts.