HEADING 3910
Silicones in primary forms
Part of Chapter 39 — Plastics and Articles Thereof, Section VII.
Subheadings and tariff lines
Recent CBP rulings on heading 3910
N359943
April 2, 2026
The tariff classification of silicone grease from Canada
N359379
March 26, 2026
The tariff classification of silicone paste from Germany
N327310
August 10, 2022
The tariff classification of silicone resin bead powder from Taiwan
N326189
June 2, 2022
The tariff classification and country of origin of bulk polydimethylsiloxane
N323214
January 10, 2022
The country of origin of vacuum cleaners
N308628
January 16, 2020
The tariff classification of silicone gel cleaner from China
N306159
September 26, 2019
The tariff classification of polymethyl hydride siloxane (CAS # 63148-57-2) from Hungary
N306218
September 26, 2019
The tariff classification of polydimethylsiloxane (CAS # 63148-62-9) from Hungary
H192517
November 24, 2014
Revocation of New York Ruling N144035; Classification of Thermal Conductive Greases
H233041
April 1, 2014
Protest number 1704-11-100407; Generalized System of Preferences; Classification of Stone; Granite; Laboratory Analysis and Report; subheading 6902.93, HTSUS
N250341
March 14, 2014
Tariff classification of a silicon-based resin filled with glass microspheres from England.
N234693
November 9, 2012
The tariff classification of silicone materials from the United Kingdom
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