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Combinations of single rings and matching headers are generally known as duplex rings to distinguish them from unit seals (implying integral construction of a combination). The term is applied particularly to combinations of a header with a fork or U- ring section. Other sections allied to separate components more...
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The packing set comprises an endless U-ring firmly supported by a header ring. The lips of the U-ring are slightly flared to provide an interference fit for initial sealing. When system pressure is applied, the sealing force is increased significantly by reaction within the tongue-shaped cavity of the U-ring. more...
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