Custom Fabricated Silicone Fiberglass Fabric Expansion Joint (Folded Bellows)
1. Product Overview
Custom fabricated silicone fiberglass fabric expansion joint (folded bellows design) is an engineered flexible piping and duct compensator constructed from high-tensile red silicone rubber coated E-glass fabric. The multi-convolution accordion folded geometry maximizes structural flexibility, allowing the joint to absorb large axial compression, extension, lateral shear, and angular misalignment caused by thermal cycling or mechanical vibration. Symmetrical silicone encapsulation provides complete resistance against hot air, flue gas, moisture, industrial greases, and chemical fumes, while the reinforced fiberglass carcass prevents fabric blowout under positive and negative draft pressures.
2. Core Technical Parameters
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Composite Membrane: Woven E-glass fabric coated with industrial red silicone rubber
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Structural Design: Multi-convolution folded accordion bellows (Rectangular, round, or custom transition profiles)
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Operating Temperature: -50°C to +260°C (Intermittent/Peak up to +280°C)
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Movement Absorption: High multi-directional displacement (Axial extension/compression, lateral deflection, angular rotation)
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Connection Configurations: Integrated bolt-hole flanges, clamping cuffs with stainless steel backing bars, or custom metal collars
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Key Characteristics: Gas-tight environmental seal, vibration dampening, low reactive force on duct anchors, flame retardant, ozone and weathering resistance
3. Common Applications
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Flexible inlet and outlet connections for industrial ventilation fans, high-temperature blowers, and air handling units (AHU)
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Thermal expansion and vibration compensation in boiler flue gas ducts, baghouse dust collectors, and exhaust stacks
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Mechanical decoupling joints for industrial furnaces, ovens, and ceramic kiln ducting
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Vibrating screen flexible sleeves and chemical plant vapor duct connectors
