E & E / Electrical Insulators (incl HV) / Fused Silica

Fused Silica

Mineral: Fused Silica 


In APAC, Sibelco’s Fused Silica is used in high voltage insulators.

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 503 10
525 1.6
FS-0500 5
FS-0140 14
FS-0180 18
FS-0200 20


Production Location: Yeonmu, Korea

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


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