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A rectangular fabric expansion joint provides a flexible connection between large square or rectangular sections of industrial ductwork. It allows the duct system to accommodate thermal expansion, lateral displacement, vibration and structural movement without transferring excessive loads into adjoining equipment and supports. Rectangular designs are especially common in power-generation ducts, bo...

To measure custom sewn bellows, record the shortest and longest distances between the same two mounting reference points, the space required around the protected component, the maximum outside envelope and the dimensions of both end fittings. For a straight axial installation, the difference between the two installed lengths is the required bellows travel. A cylinder stroke or a photograph of an o...

Replacing a worn machine bellows becomes difficult when there is no free end to slide a new cover over. A longitudinal zipper can provide another installation route: open the fabric body, position it around the existing component and close it in place. The benefit depends on the complete assembly, not the zipper alone. BSTFLEX sewn zippered bellows are made for applications requiring removable pro...

A replacement rectangular bellows can match the old cover's width and still fail to fit the machine. The mounting frame may sit at a different height, a lubrication fitting may catch the folds, or the compressed cover may occupy space needed by the moving table. For linear rails and machine ways, the replacement specification must describe the installation, not just the loose fabric cover. BSTFLEX...