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3910.00.00.00/Hydroxy-Terminated Polydimethylsiloxane/Mexico

Hydroxy-Terminated Polydimethylsiloxane from Mexico

Hydroxy-terminated PDMS is a reactive silicone fluid used in sealants and adhesives production. It qualifies under HTS 3910.00.00.00 as a primary form silicone per note (a)(3) for chemically modified polymers not more specifically covered.

Duty Rate — Mexico → United States

13%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Document hydroxy modification as minor per Chapter 39 notes to stay in 3910; excessive modification risks 'Other' reclassification

• Include viscosity and MW specs in import docs

• Test for purity to avoid blending penalties

Hydroxy-Terminated Polydimethylsiloxane from Mexico — Import Duty Rate | HTS 3910.00.00.00