4503.90.20.00/Natural Cork Thermal Insulation Disks/Japan

Natural Cork Thermal Insulation Disks from Japan

Circular disks of natural cork used as thermal barriers in high-heat applications like oven doors. HTS 4503.90.20.00 covers these cork disks for their low thermal conductivity. Cut from plank cork for durability.

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

• Certify thermal resistance values (R-value) and fire ratings

• Avoid composite forms with foil; pure cork stays in 4503

• Industrial end-use statements prevent Chapter 69 ceramic confusion