HS Code 3910
Silicones in Primary Forms
HS code 3910 covers silicones in primary forms like oils, greases, or resins, essential for lubricants, sealants, and medical-grade materials globally.
4-digit Section VIITanker
HS Code 3910 — Silicones in Primary Forms
Silicones are heat-resistant polymers used across medical, automotive, and consumer sectors. In primary forms, they exist as oils, resins, or elastomers that have not yet been vulcanised or shaped.
What's included
- Silicone oils
- Silicone resins
- Silicone elastomers
What's excluded
- Silicone sealants in retail tubes → use
3214(Retail-packed mastics and sealants are classified by function, not just material.)
Common examples
- Polydimethylsiloxane (PDMS)
- Silicone fluid for lubricants
- Standard silicone resin powder
- Silicone grease in bulk
Frequently asked questions
Are silicone gaskets covered under 3910?
No, gaskets are finished articles and are typically classified under 3926 or 4016 depending on the material composition.
Trade & shipping notes
- Typical duty range: 0% - 6.5%
- Documentation: Ensure specification sheets list viscosity for silicone oils.
- Typical shipping mode: Tanker
- Top exporters: China, Germany, United States, Japan
- Top importers: India, South Korea, Germany, Brazil
Related HS codes
Key takeaway
Covers high-value chemical inputs for lubricants and specialized coatings.
Related HS codes
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