Burner Mounting Refractory Thimble from Mexico
Cylindrical refractory sleeve that protects boiler casing where fuel burners penetrate furnace walls. Essential part for safe combustion in vapor generating boilers under HTS 8402.90.00.90.
Duty Rate — Mexico → United States
14.3%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Match thimble dimensions to specific burner models for classification support
• Include expansion joint design specs for thermal cycling proof