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70% vs 96% Silica Fabric: Which Grade Should You Choose? When specifying silica fabric for welding protection, furnace insulation, exhaust systems, fire barriers, or other high-temperature equipment, one of the first decisions is often the silica grade. Two common options are 70% silica fabric and 96% high silica fabric. Both are woven heat-resistant textiles, but they should not be considered int...
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Selecting a welding blanket by temperature rating alone is one of the most common mistakes in industrial hot work protection. A blanket hanging vertically beside a welding station does not experience the same thermal load as a blanket placed horizontally beneath cutting operations. Radiant heat from a furnace requires a different protective mechanism from molten welding spatter, while a blanket th...
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Fabric expansion joints for cement plants are flexible connections used in industrial gas ducts to accommodate specified thermal movement and equipment displacement. In kiln-related ductwork, preheater exhaust and clinker-cooler circuits, their construction must address the conditions at the individual connection—not simply the highest temperature associated with the production line. A heat-resist...
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A high temperature welding blanket should not be selected from a single maximum-temperature number. Two blankets may both be described as suitable for high-temperature service while behaving very differently under welding sparks, molten spatter, radiant heat or prolonged contact with a hot component. The base fiber, coating, fabric weight, thickness, blanket orientation and duration of exposure al...
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What Temperature Can Silica Fabric Withstand? BSTFLEX’s 70% woven silica fabric has a published working-temperature limit of 800°C (1472°F), while its 96% high silica fabric is specified for continuous thermal exposure up to approximately 1000°C (1832°F). These figures apply to the stated products—not to every material sold as silica cloth, and not automatically to their coated or adhesive-backed ...
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A removable insulation blanket has to survive more than steady heat. It may be unfastened, folded away from a valve, carried to a storage area and fitted again after maintenance. Each operation puts a different load on its stitched edges. Selecting stainless steel sewing thread therefore starts with the way the blanket is built and handled. For insulation fabricators sourcing a metallic thread, BS...
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To measure custom sewn bellows, record the shortest and longest distances between the same two mounting reference points, the space required around the protected component, the maximum outside envelope and the dimensions of both end fittings. For a straight axial installation, the difference between the two installed lengths is the required bellows travel. A cylinder stroke or a photograph of an o...
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