Float Zone Crystal Grower Quartz Crucible
A high-purity quartz crucible used in float zone crystal growers to contain molten silicon during the zone refining process for semiconductor material production. This non-electrical part maintains material purity at extreme temperatures and is not specified or included elsewhere in Chapter 84, qualifying under tariff item 8487.90.00.
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 crucible is of fused quartz or other fused silica for laboratory use
Laboratory glassware of fused quartz is classified in heading 70.17.
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
• Verify the crucible is not classified as a laboratory glassware article of heading 70.17 — if it is used for laboratory purposes, it may be excluded
• Provide documentation that it is a part of a crystal grower machine
• Confirm it has no electrical features to support classification under 8487
Related Products under Tariff item 8487.90.00
Automotive Crankshaft Oil Seal
A radial oil seal designed for sealing the crankshaft in internal combustion engines, preventing oil leakage between the rotating shaft and engine block. Made from nitrile rubber with a metal reinforced outer casing, this non-electrical machinery part is not specified or included elsewhere in Chapter 84, falling under tariff item 8487.90.00.
Axle Shaft Oil Seal
A heavy-duty oil seal for differential axle shafts in trucks, featuring a reinforced metal shell and a Viton lip designed for high-load applications. This seal retains lubricants and excludes contaminants without electrical components, qualifying for tariff item 8487.90.00 as a machinery part not elsewhere specified.
Boule Puller Seed Chuck
A precision chuck holding a seed crystal in Czochralski pullers for initiating monocrystalline growth, ensuring proper crystal orientation. This mechanical part of semiconductor crystal growing equipment contains no electrical features, qualifying for tariff item 8487.90.00 as a machinery part not specified elsewhere.
Camshaft Oil Seal
A precision oil seal for engine camshafts, featuring a low-torsion design with a metal insert and an HNBR compound to retain valvetrain lubrication. This seal is a non-electrical machinery part, classifiable under tariff item 8487.90.00 as a general machinery part not specified elsewhere.
CMP Polisher Retaining Ring
A consumable retaining ring used in chemical mechanical planarization (CMP) equipment to hold the polishing pad in place on the platen edge while allowing controlled pad wear during semiconductor wafer processing. Made from engineered plastic composite, this part has no electrical connectors, insulators, coils, contacts, or other electrical features, and is not specified or included elsewhere in Chapter 84.
CMP Polishing Head Retaining Ring
A consumable retaining ring for chemical mechanical polishing heads that contains slurry and wafer during planarization, engineered for uniform pressure distribution. This mechanical part of semiconductor wafer polishing machinery contains no electrical features, qualifying for tariff item 8487.90.00 as a machinery part not specified elsewhere.