Fused Silica Brick

Fused silica zero expansion brick for glass furnace roofs and hot repair applications. SiO₂ ≥99%, Fe₂O₃ <0.1%, no contamination. Near-zero thermal expansion eliminates expansion joints. ≥30 thermal shock cycles at 1100℃ – far superior to ordinary silica. Hot repair without stopping furnace. Factory direct.

Product Description:

【Product Introduction】

Fused Silica Brick, also known as Zero Expansion Silica Brick, is a high-purity refractory product manufactured from fused silica with SiO₂ content ≥99%. Unlike ordinary silica bricks which expand at high temperatures, this brick exhibits near-zero thermal expansion, making it an ideal material for applications requiring dimensional stability and tight masonry.

【Product Advantages】

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【Why Zero Expansion Matters】

Ordinary silica bricks expand approximately 1.5-2.2% when heated to 1450℃.

While this residual expansion can close joints and improve air-tightness,

it also creates internal stress that can lead to cracking during thermal cycling.

Fused silica brick eliminates this expansion, providing:

No need for expansion joints → tighter masonry
No internal stress → longer service life
No cracking during hot repair → reduced maintenance downtime

【Technical Specifications】

【Applications】

Fused Silica Zero Expansion Bricks are widely used in:

Established in 1990, Tynason is a leading manufacturer specializing in special-shaped and high-temperature kiln furniture.
With over 30 years of experience, we operate our own factory equipped with a 148m tunnel kiln, 8 shuttle kilns, and 10+ large-tonnage presses.
We hold 4 invention patents and 12 utility model patents. Our six product series – from bauxite-cordierite to patented Hybrid-Reinfored SiC – serve metallurgy,
glass, cement, and petrochemical industries worldwide. Exported to 20+ countries, we are committed to delivering cost-effective solutions through quality and innovation.

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