High-Purity Silica Filament Woven Fabric
This is a closed woven, plain weave fabric made from silica filaments with over 93% silica content, classified under HTS 7019.63.90.30 due to its mechanical bonding and colored composition. It is designed for extreme heat environments where standard glass fibers would degrade.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If uncolored
Uncolored silica filament fabrics shift to 7019.63.40 as color excludes them from the 'Other' colored subheading.
If silica content ≤93% or mineral wool-like
Articles of silica not meeting >93% filament criteria or resembling Chapter 68 mineral wools fall under 6815 for other silica products.
If sold as yarn or roving, not fabric
Unwoven silica filaments classified as yarn/rovings under 7019.20 rather than finished woven fabrics.
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Import Tips & Compliance
• Verify silica content certification exceeds 93% via lab analysis to avoid reclassification; ensure documentation specifies plain weave and mechanical bonding; watch for customs scrutiny on 'colored' designation requiring pigment proof
Related Products under HTS 7019.63.90.30
Industrial Silica Fabric for Expansion Joints
Plain weave, colored, mechanically bonded fabric of >93% silica filaments under HTS 7019.63.90.30, providing flexible seals in expansion joints for boilers and ducts.
High-Temp Silica Woven Sheeting
Mechanically bonded plain weave sheeting from colored silica filaments (>93% SiO2), HTS 7019.63.90.30, for lining high-temperature vessels and pipes.
Silica Filament Cloth for Fire Barriers
Colored, closed plain weave fabric of high-purity silica filaments (>93%), mechanically bonded, under HTS 7019.63.90.30 for fire barrier curtains in industrial settings.
Aerospace-Grade Silica Woven Fabric
Plain weave, mechanically bonded colored fabric from >93% silica filaments, HTS 7019.63.90.30, certified for aerospace re-entry vehicle heat shields.
Silica Fabric for Molten Metal Splash Guards
High-silica filament fabric, plain weave colored and mechanically bonded per HTS 7019.63.90.30, resists molten metal splashes in foundries.
Thermal Silica Filament Canvas
Mechanically bonded plain weave canvas of colored >93% silica filaments, classified HTS 7019.63.90.30 for durable thermal wraps.