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Fabric expansion joints for fans and blowers connect the equipment to adjoining ductwork while accommodating specified movement and providing the required gas seal. Their flexible construction can reduce the transmission of mechanical vibration through the duct connection. However, the inlet and outlet must be assessed separately: matching a fan flange is only one part of selecting the joint. BSTF...
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Vermiculite coated fiberglass fabric is widely used to manufacture welding blankets, curtains and hot-work barriers because the mineral-treated surface improves the thermal and abrasion performance of woven fiberglass. However, a fabric described as suitable for welding protection is not automatically suitable for every welding, cutting or molten-metal exposure. The correct material depends on wha...
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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...
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