Fabric Expansion Joints
SEIRIS
Different types of Fabric Expansion Joints
Strip
Max. temperature 350 °C
+/- 1500 mmH2O
All shapes, all sizes
Delivered: open or closed
Convoluted
Max. temperature 800 °C
+/- 1500 mmH2O
Application: Gas turbine exhaust, bypass and HRSG applications Large movements up to 150 mm
All shapes, all sizes
Delivered: open (supervision or assembly by SEIRIS recommended)
Belt Type
Max. temperature 800 °C (up to 1200 °C with refractory coating)
+/- 1500 mmH2O
All shapes, all sizes
Delivered: open or closed
With folded edges and deflector
Max. temperature 450 °C
+/- 1500 mmH2O
All shapes, all sizes
Delivered: open or closed
With folded edges without deflector
Max. temperature 350 °C
+/- 1500 mmH2O
All shapes, all sizes
For aggressive fluids, SEIRIS uses PTFE, EPDM or VITON specifically for FDG applications
Delivered: open or closed
With folded edges and packing
Max. temperature 600 °C
+/- 1500 mmH₂O
All shapes, all sizes
Delivered: open or closed
Conical strip with clamps
Max. temperature 350 °C
+/- 1500 mmH2O
All shapes, all sizes
Delivered: open or closed
Conical with dropped edges without deflector
Max. temperature 350 °C
+/- 1500 mmH2O
All shapes, all sizes
Delivered: open or closed
Description
At Seiris, we manufacture Fabric Expansion Joints from multiple layers of technical fabrics and elastomers, tailored to the specific requirements of each application. Our process ensures that the joints are designed to provide optimum flexibility, durability and performance in duct and piping systems.
We customise the joints to suit different shapes, sizes and operating conditions, ensuring they can withstand thermal expansion, vibration, noise, misalignment and component movement. Each joint is manufactured to provide reliable operation, easy installation and long service life, making them suitable for a wide range of industrial applications involving gaseous fluids.
We customise the joints to suit different shapes, sizes and operating conditions, ensuring they can withstand thermal expansion, vibration, noise, misalignment and component movement. Each joint is manufactured to provide reliable operation, easy installation and long service life, making them suitable for a wide range of industrial applications involving gaseous fluids.
Design and Fabrication of Fabric Expansion Joints
At Seiris, Fabric Expansion Joints are designed and manufactured to meet the specific needs of industrial systems, ensuring flexibility, durability and reliable performance.
The main design criteria are as follows:
● Ambient conditions – Temperature, environment and installation location.
● Operating conditions: type of fluid, temperature, pressure, movement, vibrations, noise and insulation.
● Support composition: materials and surface treatments.
● Type of fastening: flanges, clamping plates, brackets or other fastening methods.
Thanks to the use of high-quality fabrics and elastomers, our joints adapt to thermal expansion, vibrations, misalignment and component movement, while offering easy installation and maintenance, as well as a long service life.
The main design criteria are as follows:
● Ambient conditions – Temperature, environment and installation location.
● Operating conditions: type of fluid, temperature, pressure, movement, vibrations, noise and insulation.
● Support composition: materials and surface treatments.
● Type of fastening: flanges, clamping plates, brackets or other fastening methods.
Thanks to the use of high-quality fabrics and elastomers, our joints adapt to thermal expansion, vibrations, misalignment and component movement, while offering easy installation and maintenance, as well as a long service life.
Complete solutions for Fabric Expansion Joints:
Complete solutions for Fabric Expansion Joints:
Single layer
A single reinforced elastomer layer for standard applications, offering flexibility and strength.
Multiple layers
Support layer: shapes the joint for special configurations, protects it and keeps the insulation in place.
Insulating layer: acts as a thermal barrier.
Chemical barrier: provides protection against chemical exposure and wear.
Outer fabric: protects the seal from the external environment and harsh conditions.
Single layer
A single reinforced elastomer layer for standard applications, offering flexibility and strength.
Multiple layers
Support layer: shapes the joint for special configurations, protects it and keeps the insulation in place.
Insulating layer: acts as a thermal barrier.
Chemical barrier: provides protection against chemical exposure and wear.
Outer fabric: protects the seal from the external environment and harsh conditions.
Key advantages
- High capacity to absorb simultaneous movements (axial, lateral, angular, torsional)
- Compensates for misalignment and shaft offset
- No size limitations
- Low raw material costs
- Low installation and maintenance costs
- Lightweight and easy to handle (reduced load on ducts and safe for handling)
- Corrosion resistant
Standards
At Seiris, Fabric Expansion Joints are designed, manufactured and tested in accordance with internationally recognised standards, ensuring maximum safety, reliability and performance:
● ESA (European Sealing Association) – Provides guidelines for design, construction and sealing performance.
● FSA (Fluid Sealing Association) – Defines standards for materials, manufacturing and testing procedures.
● RAL certification – Guarantees quality control and compliance with European industrial standards.
● ESA (European Sealing Association) – Provides guidelines for design, construction and sealing performance.
● FSA (Fluid Sealing Association) – Defines standards for materials, manufacturing and testing procedures.
● RAL certification – Guarantees quality control and compliance with European industrial standards.
Quality control
At Seiris, quality control is tailored to each customer and covers all stages of production:
● Material verification – Ensuring compliance with specifications.
● Design review – Verifying the accuracy of plans and documents.
● Process inspection – Checking manufacturing consistency.
● Testing and documentation – Performing functional tests and maintaining records.
● Final inspection – Verifying the finished product before delivery.
● Material verification – Ensuring compliance with specifications.
● Design review – Verifying the accuracy of plans and documents.
● Process inspection – Checking manufacturing consistency.
● Testing and documentation – Performing functional tests and maintaining records.
● Final inspection – Verifying the finished product before delivery.
Services
● Emergency supply – Delivery within 24 to 48 hours.
● Custom manufacturing – Custom expansion joints to meet specific requirements.
● On-site inspection and assessment – Expert evaluation of existing systems.
● Installation supervision – Advice during installation to ensure optimal performance.
● Turnkey installation – Complete installation handled by our qualified teams.
● Custom manufacturing – Custom expansion joints to meet specific requirements.
● On-site inspection and assessment – Expert evaluation of existing systems.
● Installation supervision – Advice during installation to ensure optimal performance.
● Turnkey installation – Complete installation handled by our qualified teams.