Silica Fabric and High Silica Cloth for High Temperature Insulation
Aug 19, 2026
Silica Fabric and High Silica Cloth for High Temperature Insulation Silica fabric is a woven high-temperature textile used where conventional fiberglass fabrics may not provide sufficient thermal performance. Depending on the silica content, weave, weight, thickness and surface treatment, silica cloth can be used for welding protection, furnace insulation, exhaust heat containment, removable insulation covers, fire curtains, expansion joints and other industrial thermal protection systems. BSTFLEX supplies a broad range of woven silica fabric and specially treated silica textiles, including 70% silica fabric, 96% high silica fabric, silicone rubber coated silica cloth, aluminum coated silica fabric, vermiculite coated silica cloth and adhesive backed silica fabric. Different constructions solve different thermal problems. A plain high purity silica fabric may be selected for direct high-temperature insulation, while an aluminum surface is more appropriate where radiant heat is the main concern. Silicone coating provides a different combination of surface protection and fabrication characteristics, while adhesive backing is useful when the material must be installed directly onto a component or thermal barrier. For engineers, fabricators and industrial buyers, the correct material should therefore be selected according to the actual heat source rather than by temperature rating alone. What Is Silica Fabric? Silica fabric is produced from silica-based fibers that are formed into yarn and woven into a flexible textile. It may also be described in industry as silica cloth, silica textile, silica fibre cloth, silica fiber cloth, woven silica fabric, silica glass fiber cloth or silica fiberglass fabric. High silica grades contain a substantially higher proportion of SiO2 than conventional E-glass fabrics and are intended for more demanding thermal environments. BSTFLEX's 96% High Temp Silica Fabric, for example, is manufactured from at least 96% silica fiber and is designed for continuous thermal exposure around 1000°C. The woven construction gives the material an important advantage over rigid insulation: it can be cut, wrapped, sewn and fabricated into finished thermal protection components. Typical forms include: Rolls and sheets Welding blankets Fire curtains Furnace curtains Exhaust insulation layers Removable insulation jackets Heat shields Expansion joints Equipment protection covers Custom fabricated thermal barriers What Is High Silica Fabric? High silica fabric is a silica-rich woven textile developed for applications involving sustained high temperatures, flame exposure and thermal insulation. Terms such as high silica fabric, high silica cloth, high silica fabric cloth, high silica glass fabric, high silica glass fiber fabric, high silica fiberglass cloth and high silica fiberglass fabric are often used by industrial buyers when searching for this type of material. One of the most important specifications is silica content. BSTFLEX supplies...
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