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Alumina Ceramic Feedthrough Insulator

Hermetically sealed 99.5% alumina ceramic feedthrough for high-vacuum systems, passing conductors while maintaining insulation. HTS 8546.20.00 for this ceramic electrical insulator in RF/microwave applications.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
๐Ÿ‡จ๐Ÿ‡ณChina3%+37.5%40.5%
๐Ÿ‡ฒ๐Ÿ‡ฝMexico3%+10.0%13%
๐Ÿ‡จ๐Ÿ‡ฆCanada3%+10.0%13%
๐Ÿ‡ฉ๐Ÿ‡ชGermanyFree+10.0%10%
๐Ÿ‡ฏ๐Ÿ‡ตJapanFree+12.5%12.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

6909.90.00Higher: 41.5% vs 40.5%

If non-hermetic vacuum ceramic components

Laboratory crucibles/glassware in 6909 lack electrical feedthrough design.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code โ€” and can price the duty on it in the same conversation.

Import Tips & Compliance

โ€ข Helium leak rate certification (<10^-9 atm cc/sec)

โ€ข RF power handling and VSWR specifications

โ€ข Distinguish from vacuum tube parts (8540.91)