</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →
4503.90.20.00/Natural Cork Pipe Flange Washers/Mexico

Natural Cork Pipe Flange Washers from Mexico

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 — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Calculate with your customs valueVerify classification with AI

Import Tips

• Pressure rating certifications required

• Size declarations prevent Chapter 39 gasket confusion

• Bulk import avoids 7307 pipe fitting classification