Royalty MB Antioxidant Masterbatch from Canada
Royalty MB is a 50% polymer-bound mixed aromatic antioxidant masterbatch for injection-molded rubber gaskets containing hindered phenols and amines. HTS 3812.39.60.00 applies due to aromatic stabilizer composition.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Specify masterbatch let-down ratio and processing temperature range
• Include migration test results for food-grade gasket applications
• Prevent reclassification by documenting rubber-specific dispersion