Coated Paperboard Flange Washers from China
Washers cut from moisture-resistant coated paperboard used between flanges in plumbing and HVAC systems. Classified under HTS 4823.90.60.00 due to being washers of coated paperboard, providing compressible sealing without adhesive. The coating prevents fiber swelling in humid environments.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Document compression strength and water absorption tests to prove suitability as washers/seals
• Label shipments clearly as 'coated paperboard washers for sealing' to prevent confusion with metal products
• Avoid misclassification by ensuring no metal inserts; pure paperboard composition required