Vibration Isolation Mount for Centrifuge
Elastomer vibration isolation mounts designed for semiconductor processing centrifuges to prevent wafer defect transmission during operation. They are essential for stable operation during crystal boule grinding. Classified as other parts of centrifuges under this tariff item.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the mounts are general-purpose vibration dampers of rubber
Articles of vulcanised rubber for technical uses are classified in heading 40.16.
If the mounts are used in machines other than centrifuges
Parts of machines with specific functions not covered elsewhere are classified in heading 84.79.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the mounts are classified as centrifuge parts, not as general vibration dampers, to avoid higher duty rates
• Provide engineering drawings showing their specific design for centrifuge mounting
• Check if the elastomer material triggers any import restrictions under environmental regulations
Related Products under Tariff item 8421.91.90
Centrifugal Dryer Basket for Wafers
A perforated titanium basket for centrifugal dryers used to remove process fluids from semiconductor wafers post-polishing. This basket is a part of a centrifuge, classified under 8421.91.90 as 'Other' parts of centrifuges, including centrifugal dryers.
Centrifuge Rotor Assembly
A replacement rotor assembly for laboratory centrifuges used in semiconductor wafer processing to separate particles from liquids. This rotor assembly is a part of a centrifuge, classified under 8421.91.90 as 'Other' parts of centrifuges.
Centrifuge Safety Shroud
A carbon fiber safety shroud containing rotor fragments in case of failure during high-speed semiconductor slurry separation. This shroud is a part of a centrifuge, classified under 8421.91.90 as 'Other' parts of centrifuges.
Crystal Puller Centrifuge Spindle
A precision-ground spindle for driving rotors in centrifuges used with Czochralski crystal growers in semiconductor production. This spindle is a part of a centrifuge, classified under 8421.91.90 as 'Other' parts of centrifuges.
High-G Centrifuge Bearing Housing
An aluminum housing for precision bearings in high-G force centrifuges used for float zone crystal purification in semiconductors. This housing is a part of a centrifuge, classified under 8421.91.90 as 'Other' parts of centrifuges.
Lab-Scale Wafer Centrifuge Drive Shaft
A coupled drive shaft designed for laboratory-scale centrifuges used in R&D crystal grinding of small wafer batches. Its quick-change coupling supports rapid process changes in semiconductor research environments. Classified as other parts of centrifuges under this tariff item.