Rubber / Rubber Silicone / Fused Silica

Fused Silica

Mineral: Fused Silica


In APAC, Sibelco’s fused silica products are used in compounding silicone rubber.

Fused silica is an angular “shaped” silica produced by grinding and milling high purity silica/ quartz. Fused silica therefore has the same intrinsic properties as any other silica. Its chemical formula is SiO2

At Sibelco high purity quartz is being used to make fused silica.



Name Grade D50
Megasil 525 9


Production Location: Yeonmu, Korea

Application: Reinforcement and dimensional stability (low shrinkage) – good electrical insulating.


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