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%+35.0%38%
๐Ÿ‡ฒ๐Ÿ‡ฝMexico3%+10.0%13%
๐Ÿ‡จ๐Ÿ‡ฆCanada3%+10.0%13%
๐Ÿ‡ฉ๐Ÿ‡ชGermany3%+10.0%13%
๐Ÿ‡ฏ๐Ÿ‡ตJapan3%+10.0%13%

Alternative Classifications

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

6909.90.00Higher: 39% vs 38%

If non-hermetic vacuum ceramic components

Laboratory crucibles/glassware in 6909 lack electrical feedthrough design.

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Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

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)