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8546.20.00.90/Steatite Ceramic Bushings/Japan

Steatite Ceramic Bushings from Japan

Steatite (magnesium silicate) ceramic bushings used in low to medium voltage switchgear for conductor insulation through enclosure walls. Known for low electrical loss and high thermal stability up to 1000°C. Classified in 8546.20.00.90 as other ceramic electrical insulators.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• Include specific gravity (2.7-2.9) and loss tangent (<0.006) test data for steatite verification

• Document IP rating (IP54 minimum) for enclosure applications