Silica Filament Woven Fabric for Kiln Insulation from Mexico
High-purity woven fabric made from silica filaments with over 93% silica content, designed for thermal insulation in industrial kilns and furnaces. It falls under HTS 7019.72.40.30 as a chemically bonded, closed, uncolored silica filament fabric used in high-temperature environments. The fabric's structure provides excellent heat resistance up to 1650°C.
Duty Rate — Mexico → United States
17.3%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Verify silica content certification exceeding 93% via lab analysis reports to confirm classification; ensure documentation distinguishes from lower-purity glass fibers
• Watch for misclassification as generic nonwovens under 5603 if not specified as silica filament