Wafer Polisher Head Retaining Ring
Consumable composite retaining ring that holds wafer in place against polishing pad during CMP on 8426.30 polishers. Classified as principal wearing part for 8431.49.1010.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If plastic ring sold generically
Other plastic articles not machinery parts classify under Chapter 39.
If accessory rather than principal part
Non-principal fittings/accessories go to separate 8431 subcategory.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Specify material composition (PU/PPS) and groove pattern
• Distinguish from polishing pads (6804)
Related Products under HTS 8431.49.10.10
Crystal Puller Seed Holder Chuck
Rotating graphite or molybdenum chuck that precisely grips silicon seed crystal during Czochralski pulling in 8426.11 pullers. Critical growth interface part for 8431.49.1010.
Float Zone Crystal Grower RF Coil
Radio frequency induction coil for float zone crystal growers (8426.11) that melts silicon rods without crucibles to produce high-purity monocrystalline ingots for wafers. Classified in 8431.49.1010 as a principal part dedicated to semiconductor processing equipment.
Wafer Lapping Machine Conditioning Ring
Cast iron or composite conditioning ring for wafer lappers (8426.30) that dresses the lapping plate surface for flatness control in semiconductor wafer preparation. Specific to machinery in 8426.11/19/30 subheadings, hence 8431.49.1010.
Crystal Grinder Flattening Fixture
Custom precision fixture that holds crystal boules for grinding orientation flats indicating conductivity type in 8426.30 equipment. Semiconductor-specific part for 8431.49.1010 classification.
Wafer Polishing Pad Conditioner Disk
Diamond-embedded conditioner disk for dressing chemical mechanical polishing pads on wafer polishers (8426.30). Essential maintenance part solely for semiconductor wafer finishing machinery under 8431.49.1010.
Float Zone Furnace Quartz Crucible Holder
Although float zone is crucible-less, this precision quartz holder supports seed/feed rods in RF furnaces (8426.11) for stable zone melting. Part for semiconductor crystal growth equipment under 8431.49.1010.