Custom Fabricated Rectangular Silicone Fiberglass Fabric Expansion Joint
1. Product Overview
Custom fabricated rectangular silicone fiberglass fabric expansion joint is an engineered non-metallic duct compensator constructed from high-tensile black silicone rubber coated E-glass fabric. Built to exact rectangular or square duct dimensions, this flexible sleeve features reinforced corner seams and pre-drilled flange bolt patterns designed to match standard duct mating flanges. The elastomeric silicone composite absorbs mechanical vibrations generated by large ventilation fans and blowers while compensating for axial, lateral, and angular duct thermal expansion. The continuous silicone encapsulation provides an impermeable barrier against dust, particulate matter, hot flue gas, industrial grease, and chemical fumes.
2. Core Technical Parameters
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Composite Membrane: Woven E-glass fabric coated symmetrically with industrial black silicone rubber
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Structural Geometry: Custom rectangular or square sleeve with folded or stitched high-strength corners
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Operating Temperature: -50°C to +260°C (Intermittent/Peak up to +280°C)
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Movement Compensation: Multi-directional displacement (Axial compression/extension, lateral shear, angular deflection)
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Flange & Mounting: Custom bolt-hole centers, integrated fabric clamping flanges, with optional stainless steel backing bars
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Key Characteristics: Gas-tight environmental seal, mechanical vibration isolation, low reactive load on duct anchors, flame retardant, weather and ozone resistant
3. Common Applications
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Rectangular duct connections at industrial fan blower inlets and outlets to isolate vibration transmission
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Thermal expansion compensation for boiler flue gas ducts, baghouse dust collection systems, and exhaust air mains
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Flexible decoupling sleeves for industrial drying ovens, kilns, and air handling units (AHU)
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Transition duct connectors between vibrating screens, hoppers, and rigid exhaust ductwork
