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Non-Metallic Expansion Joint
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Non-Metallic Expansion Joint
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Non-metallic expansion joints are flexible connectors designed to provide stress relief and seal in gaseous media in ducting systems.

They are fabricated from a wide variety of non-metallic materials, including synthetic elastomers, fabrics, insulation materials and fluoroplastics, depending on the designs.




Expansion Joint Capabilities & Advantages

Expansion joints provide flexibility in duct work and are used to allow for 4 main situations: 

- expansion or contraction of the duct due to temperature
   changes.

- isolation of components to minimize the effects of vibration
  or noise.

- movement of components during process operations.

- installation or removal of large components and erection
  tolerances.



Advantages of non-metallic expansion joints include


- Large movements in a short length

- Ability to absorb simultaneous movements easily in more
  than one plane

- Very low forces required to move the expansion joint

- Corrosion Resistant Materials of Construction

- Noise and Vibration Resistance

- Ease of Installation

- Minimal Replacement Cost

- Design Freedom

- Thermal Breaks


 ◆ Single Layer Construction

An expansion joint formed of one consolidated layer, often constructed from elastomers and reinforcement materials or fluoroplastics and reinforcement materials.


◆ Multi-Layer Construction

An expansion joint in which the various plies are of different materials which are not integrally bonded together





◆ Belt-Type Expansion Joint Configuration

An expansion joint in which the flexible element
is made like a flat belt 




◆ Flanged-Type Expansion Joint Configuration

An expansion joint in which the flexible element has flanges formed at right angles





◆ Expansion Joint Clamping Configuration

An expansion joint that utilizes both belt type and flanged configurations