United States tariff line 4002.39.00.00: Other
Last updated
Key facts
- Tariff line
- 4002.39.00.00
- Covers
- Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR)
- Duty (MFN)
- Free
- Additional duties
- None recorded
- Restrictions
- None recorded
- Tariff
- United States
- HS subheading
- 4002.39
Summary
In the United States tariff, line 4002.39.00.00 covers isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR). Goods under this line enter free of general (MFN) duty. It falls under HS subheading 4002.39 in heading 40.02 (chapter 40).
What this line covers
In the United States tariff, line 4002.39.00.00 covers isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR).
Its legal text is “Other”, read under “Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR)”.
How it is structured
It falls under HS subheading 4002.39 in heading 40.02 (chapter 40). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.
- Chapter 40
- Rubber and articles thereof
- Heading 40.02
- 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
- Subheading 4002.39
- Isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR)
- Line 4002.39.00.00
- Other
Duty
Goods under this line enter free of general (MFN) duty.
In other countries
No other national tariff on border.bot has live lines under 4002.39 yet.
Frequently asked questions
What does tariff line 4002.39.00.00 cover in the United States tariff?
In the United States tariff, line 4002.39.00.00 covers isobutene-isoprene (butyl) rubber (IIR); halo-isobutene-isoprene rubber (CIIR or BIIR).
What is the general (MFN) duty on 4002.39.00.00 in the United States?
Goods under this line enter free of general (MFN) duty.
Sources and updates
The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
This page was last updated on 9 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.
Official source files: