3910.00.00.00
Silicones in primary forms
Data provenance: Rates from HTS Revision 16 (Aug 15, 2026); trade measures verified against CBP CSMS and Federal Register notices through Aug 15, 2026.
Duty rates
Column 1 (General / MFN)
3%
Column 2 (Non-NTR)
25%
Column 1 (Special / FTA)
Free
Eligible
The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.
Trade measures (Chapter 99)
9903.90.08
35%
ActiveArticles the product of the Russian Federation, as provided for in U.S. note 30(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 30(b) to this subchapter
Applies to origin: RU, BY
Effective from April 5, 2025
Related CBP rulings
The tariff classification of silicone grease from Canada
The product under consideration is Item 501-00001-000.A1-Grease, Cable, Headband. The product is a silicone grease described as a translucent, hydrophobic, silicone dielectric compound. It is composed of over 90 percent poly(dimethyl siloxa
The tariff classification of silicone paste from Germany
The product under consideration is referred to as Otoform AK. The product is a silicone paste. It is packaged ready to use and packaged for direct sale. It will be used to take individual ear impressions of the external auditory canal and t
The tariff classification of silicone resin bead powder from Taiwan
GW-201NE-T and GW-504NE-T are composed of 100 percent polymethylsilsesquioxane (CAS No. 68554-70-1. The products are white silicone resin bead powders. The only difference between the two products are the micron size of the beads. GW-201NE-
The tariff classification and country of origin of bulk polydimethylsiloxane
The product under consideration is described as polydimethylsiloxane. It is composed of a mixture of linear and cyclic siloxanes. The final product contains no solvent or additives.
The country of origin of vacuum cleaners
presented in this case because the Vacuum Cleaners are neither wholly obtained or produced nor produced exclusively from “domestic” (Mexican, in this case) materials. Because the analysis of sections 102.11(a)(1) and 102.11(a)(2) does not y
The tariff classification of silicone gel cleaner from China
The product in question is described as stylus gel cleaner. It consists of 100 percent silicone gel in a plastic container. The product is marketed for cleaning the dust from a turntable stylus needle. The turntable stylus needle is dipped
The tariff classification of polymethyl hydride siloxane (CAS # 63148-57-2) from Hungary
The product is described as polymethyl hydride siloxane (CAS # 63148-57-2), a silicone organic liquid free of solvents.
The tariff classification of polydimethylsiloxane (CAS # 63148-62-9) from Hungary
The product is described as linear non-reactive polydimethylsiloxane, (CAS # 63148-62-9).
Revocation of New York Ruling N144035; Classification of Thermal Conductive Greases
The subject merchandise consists of five types of thermal conductive greases. These products, identified as X23-7783D, G751, X23-7756, X23-7762, and G765, are imported in the form of organopolysiloxane paste containing aluminum and zinc ox
Protest number 1704-11-100407; Generalized System of Preferences; Classification of Stone; Granite; Laboratory Analysis and Report; subheading 6902.93, HTSUS
The merchandise at issue is three types of stone imported from Brazil used as building materials for items such as kitchen counter tops. The specific stones at
Tariff classification of a silicon-based resin filled with glass microspheres from England.
Novolastic is a room-temperature vulcanizing silicone resin compounded with hollow glass microspheres designed to reduce density and lower thermal conductivity. The glass microspheres are relatively thick-walled and provide good crush stren
The tariff classification of silicone materials from the United Kingdom
Sample 1 is described as vulcanized silicone reinforced with glass fabric. The sample is in the form of a solid plastic sheet that incorporates a middle reinforcing layer of glass fabric. The vulcanizing agent is peroxide and the vulcanizin
Duty by origin country
The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 3910.00.00.00 from each major US trading partner.
Follow 3910.00.00.00
Get an email when a new CBP ruling cites this code, a ruling on it is revoked, or its tariff measures change.
One email per day at most. Confirm your address once, unsubscribe anytime.
Need to defend this classification?
Get the full 10-digit classification with GRI reasoning for your product, backed by cited CBP rulings and an audit trail for reasonable care.