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8546.20.00.90/Laboratory Mullite Electrical Insulators/Japan

Laboratory Mullite Electrical Insulators from Japan

Mullite (3Al2O3·2SiO2) ceramic standoffs and tubes for laboratory high-voltage testing equipment and spark testers. Excellent arc resistance and machinability. HTS 8546.20.00.90 classification.

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 mullite purity (>99%) and volume resistivity (>10^14 ohm-cm) data

• Specify surface finish (Ra < 0.8μm) for high-voltage applications