Glass Furnace Silica Brick
Fused silica bricks with over 95% silica content, fired for glass tank furnace crowns and walls. They offer excellent creep resistance at temperatures above 1500°C. Classified under 6902.20.00 as refractory bricks with high silica content.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the brick is not a constructional good
Other refractory articles may fall under heading 6903.
If the brick is not fired after shaping
Unfired refractory articles are excluded from Chapter 69.
If the article is made of glass rather than ceramic
Glass articles are classified in Chapter 70.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the silica content exceeds 50% by weight and the brick is fired
• Provide a lab analysis to the CBSA to confirm composition
• Note that fused silica bricks are still ceramic goods if fired after shaping, per Chapter 69 notes
Related Products under Tariff item 6902.20.00
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A kiln brick composed of 70% alumina, designed for pottery and glass kilns, providing superior refractoriness. It is shaped and fired to maintain structural integrity at temperatures exceeding 1700°C, making it a refractory ceramic constructional good.
70% Alumina Refractory Brick
A standard 70% Al2O3 refractory brick fired for use in glass tank regenerator checkers and cement kilns. It is a constructional ceramic good exceeding 50% alumina, meeting the requirements of this tariff item.
70% Alumina Refractory Checker Brick
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90% Alumina Refractory Brick
A refractory brick composed of 90% alumina for superior thermal shock resistance in high-heat environments. It is a fired ceramic constructional good shaped for boiler and incinerator linings, meeting the requirements of this tariff item.
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Alumina Refractory Anchor Brick
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