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4503.90.20.00/Natural Cork Pipe Flange Washers/Japan

Natural Cork Pipe Flange Washers from Japan

Large cork washers for sealing pipe flanges in low-pressure systems. Classified HTS 4503.90.20.00 as cork washers; compressible for easy installation. Common in agricultural plumbing.

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

• Pressure rating certifications required

• Size declarations prevent Chapter 39 gasket confusion

• Bulk import avoids 7307 pipe fitting classification