Coated Paperboard Valve Stem Seals from Canada
Precision seals from coated paperboard for hydraulic valve stems. Classified HTS 4823.90.60.00 as coated paper seals preventing fluid bypass. PTFE coating enhances lubricity and chemical resistance.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Pressure rating and fluid compatibility documentation essential
• Microscopic thickness measurements for stem clearance verification
• Distinguish from 8481 valve parts requiring functional assembly proof