Northern Industrial Supply Co. (NISCO) can provide a wide range of expansion joints used for repair applications. These expansion joints are often used to repair pipe and duct systems by replacing inadequate components. Our joints are designed to handle standard, maximum, and ultra-high movement. They feature fully molded corners that prevent failures and eliminate the need for expensive gaskets or heavy ductwork. We offer models that are suited to high temperatures, corrosive environments, shock and vibration, and more. Contact us for details on the broad selection of expansion joints available.

Repair expansion joints

Our expansion joints are often used for repair applications. Since these joints can be custom designed, they can be tailored to overcome specific challenges.

One example is when a solid fuel power plant was experiencing problems with an existing expansion joint on its wet scrubber inlet. The joint was tearing at the corners due to excessive movement of the duct system. To solve the issue, an extra thick Viton expansion joint with wire reinforcement was supplied. The replacement joint was also specifically designed to handle the large movements.

Another example is when these joints were used to solve one customer’s problem with its electro polishing process. The customer is a fencing manufacturer that uses electro polishing tanks to polish fence posts. The problem was the sulfuric acid solution used was dripping from wire cathodes between two tanks and corroding the drip trays, forcing early replacement and downtime. To solve the problem, a custom three-sided expansion joint was used to connect the two tanks.

Quality manufacturing

NISCO supplies expansion joints that are manufactured by Holz Rubber. The company is dedicated to ensuring its products contribute to customers’ success. A variety of joints are available including piping, flue duct, metallic, and high temperature types.

Industries served

These expansion joints are used in a wide range of industries and applications. Some examples include HVAC, power generation, pressure vessel manufacturing, pharmaceuticals, marine applications, and waste water treatment.

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