Natural Cork Thermal Insulation Disks from Canada
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 — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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