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HTS 3910Silicones in primary forms

Product or HTS code

Rate lines1

Code	Description	General	Special	Column 2	Units	Calculate
3910.00.00.00	3910.00.00.00Silicones in primary formsGeneral 3% · Special Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	3%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%	kg

2026 HTS Revision 21 (October 9, 2026)

Duty by country of origin

Rate line	Germany30.64% of imports	Japan25.09% of imports	Canada10.29% of imports	China8.72% of imports	South Korea4.78% of imports	France4.18% of imports	Thailand3.1% of imports	Belgium2.36% of imports	Vietnam1.79% of imports	Italy1.14% of imports
3910.00.00.00Silicones in primary forms	10%9903.05.39	12.5%9903.05.49	13%9903.05.29	40.5%9903.05.319903.88.02	12.5%9903.05.71	10%9903.05.39	15.5%9903.05.77	10%9903.05.39	15.5%9903.05.84	10%9903.05.39

Total duty on a $10,000 ocean shipment entered 2026-10-13, before customs fees. Origins are the leading sources of US imports under this heading in 2025 (US Census Bureau).