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FABRIC EXPANSION JOINT

Highly flexible, multi-layer fabric expansion joints designed for low-pressure, high-temperature gas applications. Manufactured in any size or shape, they are the preferred solution for ducts and channels carrying clean air, flue gases, or aggressive media.

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Fabric

expansion joint

Flexibel fabric expansion joints are engineered using advanced textile composites, often reinforced with insulation layers and protective coatings. Unlike metallic bellows, fabric joints handle very large thermal movements, vibrations, and misalignments with minimal reaction forces. They can be supplied as complete units with steel frames, insulation pillows, and sealing layers, ready for installation. Replacement of spare fabrics for existing joints is also available.

  • Size Range (DN)

    No standard limits – up to 20,000 mm

  • Materials

    Multi-layer technical fabrics (glass fibre, PTFE, silicone, elastomers, insulation pads, protective covers)

  • Construction

    Layered fabric composite with optional steel frames and insulation pillows

  • Pressure Rating

    Up to 0.5 bar (50 kPa)

  • Temperature Range

    Up to 1100°C (depending on media & fabric type)

  • Movements

    Large Axial, Lateral & Angular deflections

Fabric

expansion joint

Flexibel fabric expansion joints are engineered using advanced textile composites, often reinforced with insulation layers and protective coatings. Unlike metallic bellows, fabric joints handle very large thermal movements, vibrations, and misalignments with minimal reaction forces. They can be supplied as complete units with steel frames, insulation pillows, and sealing layers, ready for installation. Replacement of spare fabrics for existing joints is also available.

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  • Size Range (DN)

    No standard limits – up to 20,000 mm

  • Materials

    Multi-layer technical fabrics (glass fibre, PTFE, silicone, elastomers, insulation pads, protective covers)

  • Construction

    Layered fabric composite with optional steel frames and insulation pillows

  • Pressure Rating

    Up to 0.5 bar (50 kPa)

  • Temperature Range

    Up to 1100°C (depending on media & fabric type)

  • Movements

    Large Axial, Lateral & Angular deflections

Typical use case: Extensively used in ducting and flue gas systems where piping flexibility cannot be achieved with metallic expansion joints, particularly in high-temperature, low-pressure service.

Other applications include:

  • Power plants (boilers, gas turbines, FGD units)
  • Oil & gas refineries and petrochemical complexes
  • Cement, steel, aluminium & metallurgical plants
  • Paper, sugar, and process industries
  • HVAC and ventilation systems
  • Marine, shipbuilding, and offshore exhaust systems
  • Green hydrogen, solar, and renewable energy installations
  • Handles very large movements relative to length
  • Absorbs movements in all directions (axial, lateral, angular) → reduces number of joints required
  • Extremely low reaction forces → minimal stress on ductwork and equipment
  • Effective noise and vibration reduction
  • Flexible designs: conical, round-to-square, and other custom shapes
  • Easier replacement for large installations compared to metallic joints
  • Proven performance in aggressive gas media and extreme thermal cycles
Pending
Steel Frames

bolted or welded duct connections

Insulation Pillows

protect fabric from hot gas streams

Protective Layers

PTFE, silicone, or elastomer covers for chemical and weather resistance

Sealing Layers

multiple fabric plies for gas-tight construction

Custom Shapes

rectangular, round, conical, or transition (round-to-square)