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HTS code reference›Chapter 40: Rubber and articles thereof›4002.31.00.00

HTS Code 4002.31.00.00

Isobutene-isoprene (butyl) rubber (IIR)

Official tariff path

Synthetic rubber and factice derived from oils, in primary forms or in plates, sheets or strip; mixtures of any product of heading 4001 with any product of this heading, in primary forms or in plates, sheets or strip: › Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR): › Isobutene-isoprene (butyl) rubber (IIR)

Level: statistical10General duty: FreeUnit: kg

What does HTS 4002.31.00.00 cover?

This provision appears in the 2026 Harmonized Tariff Schedule of the United States under the following legal tariff hierarchy. A product must match the wording and applicable section or chapter notes before this code is used on an entry.

  1. 1Synthetic rubber and factice derived from oils, in primary forms or in plates, sheets or strip; mixtures of any product of heading 4001 with any product of this heading, in primary forms or in plates, sheets or strip:
  2. 2Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR):
  3. 3Isobutene-isoprene (butyl) rubber (IIR)

Nearby tariff provisions

4002.11.00.00Latex4002.19.00Other4002.20.00.00Butadiene rubber (BR)4002.39.00.00Other4002.41.00.00Latex4002.49.00.00Other4002.51.00.00Latex4002.59.00.00Other
Official source and limitations

Based on USITC HTS 2026 Revision 12, published July 21, 2026. The general rate does not include every origin-specific program, Section 301 or 232 measure, antidumping or countervailing duty, quota, or other agency requirement.

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