Project Description

Fabric Expansion Joint

Fabric expansion joints add flexibility to industrial ducting systems and fan/blower connections to absorb thermal growth. They also isolate vibration and noise and allow for misalignments. Furthermore, fabric joints are needed in various industries, including power, petrochemical, pulp & paper, and countless other industrial facilities. A variety of styles and materials are available to meet the specific requirements of any given application.

Fabric expansion joints are very flexible. Also, they are made from fabrics. Additionally, they protect against abrasion. Also, they are good for a piping system that moves in multiple directions. Fabric joints can be custom-made and are easy to transport and install. These are usually used when there is low pressure and dry media. Often fabric expansion joints can be used in ducting with ducting expansion joints. Moreover, bellmouth reducers are used with fabric joints on ducting systems.


  • Standard profiles include U-type, flat belt type, square, rectangular, and round.
  • Excellent corrosion and chemical resistance.
  • Baffles protect the inner surface from particulates in the gas stream.
  • Retaining rings are made from carbon or stainless steel.


  • Stress relief for piping and ducting systems.
  • Absorbs thermal growth and shock.
  • Isolates mechanical vibration.
  • Simple retrofit into an existing ducting system.
  • Cost-effective solution to compensate for movement in ducting systems.

Fabric pipe expansion joints are often used in ducts that carry hot gases at low pressures. The major design parameters are the temperatures and flow rates of the gases and the amount and abrasiveness of solids suspended in the gases. Layers of different fabrics insulation can be combined to accommodate the temperatures and pressure in the system. The fabric belt may need to be replaced periodically. They are extremely flexible and can be made from various special woven fabrics coated or laminated with selected elastomers or fluoropolymers.

Fabric expansion joints are used to insulate, avoid mechanical loads and protect against abrasion. They offer advantages for the pipework designer as they can absorb movements simultaneously in several directions. Further, they have almost no reactive forces and require little space. Fabric expansion joints are easy to customize to suit existing operating conditions and are easy to transport and install.

Compared to metal expansion joints, the fabric offers almost unlimited flexibility, giving the pipework designer more options. Fabric expansion joints are installed in systems operating with low pressure and dry media. These expansion joints add flexibility to industrial ducting systems and fan/blower connections to absorb thermal growth, isolate vibration and noise, and allow for misalignments. Their large movements in each space, small spring rates, and large temperature range give them advantages not available with other types of joints. They are needed in various industries, including power, petrochemical, pulp & paper, and countless other industrial facilities.

Fabric Joints

Fabric joints use fabric materials for expansion. They are commonly used in low-pressure pipelines to compensate for misalignment, vibration, and thermal expansion. Fabric joints can be made of composite fabric with built-in insulation or separate insulation pads, which can withstand temperatures above 1000°F. Fabric expansion joints can be used to compensate for thermal expansion. As well as misalignment of pipes without the spring load associated with other joints. Also, fabric joints can be used for greater lateral motion or twisting. Depending on the application and service, you can add components to the fabric expansion joints.

Fabric Pipe Expansion Joints

Fabric expansion joints are often used in ducts that carry hot gases at low pressures. The temperature and flow rates of those gases will determine the major design parameters. The amount and abrasiveness of the solids suspended in those gases also play a deciding factor in how your pipe expansion joint is manufactured. A fabric pipe expansion joint comprises layers of different fabric insulation that we can combine to accommodate each specific need. Depending on the pressure and temperature in the application using the pipe expansion joint, that application or desired result will determine the type of construction and makeup of that expansion joint.

When it comes to industrial duct systems, one of the worst things that can happen is thermal growth. To explain, industrial duct systems that carry hot gases or air through them for extended periods of time can eventually begin to expand and warp.

This is called thermal expansion, and it can be a serious problem if it’s not dealt with properly. It can lead to significantly increased wear-and-tear on your industrial duct system, or worse, and it can even cause serious damage, requiring you to repair or replace the ducts entirely. If you want to avoid all of the problems that can come from thermal growth, then we strongly suggest you install fabric expansion joints in all of your industrial duct systems. We guarantee you will not regret it!

What Are Fabric Expansion Joints?

To connect multiple pieces of industrial ducting, we use expansion joints. The problem with expansion joints, though, is that if they are too rigid and stiff, with very little flexibility, they may begin to break when thermal expansion occurs, and the ducts begin to move around.

With the help of fabric expansion joints, you can easily avoid this problem. Using a loose fabric connection rather than a rigid metal one, fabric expansion joints are flexible enough to easily absorb any movement caused by thermal expansion in the ducts. As a result, your ducts will be able to expand and warp without this, leading to any serious damage to the duct system as a whole.

If that’s not enough to convince you, fabric expansion joints can also help reduce the noise created by the duct system. By absorbing and isolating the vibrations and movement of the ducts, fabric expansion joints can actually help make your ducts quieter and less distracting overall.

What are the Features of Fabric Expansion Joints?

Coming in a variety of shape profiles (including U-type, flat belt type, square, rectangular, and round), and featuring a variety of extensive customization options regarding materials and features, fabric expansion joints can be easily installed into any industrial duct system, regardless of its shape and size!

Not only are they easily installable, but they are also affordable and easy to transport and store. This makes fabric expansion joints a smart and cost-effective way to deal with a serious problem.

In Conclusion

Regardless of the industry you work in. Whether it be ventilation, petroleum, power, or any number of others, fabric expansion joints are the answer to your problems regarding thermal growth.

Please contact us for a quote.