8540.89.00.80/Mercury Arc Rectifier Tube/Japan

Mercury Arc Rectifier Tube from Japan

Gas-filled tube using mercury vapor arc for high-voltage DC power conversion in industrial applications. HTS 8540.89.00.80 includes mercury arc rectifying tubes as specified in heading description.

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

• Hazardous material declaration mandatory due to mercury content; follow EPA/DOT regulations

• Prove vapor construction vs solid-state rectifiers (8541.10) with cutaway diagrams