The X-ring design consists of two axial sealing surfaces and two radial sealing surfaces arranged in an X-shaped configuration. This shape gives the X-ring its name. The cross-section of the X-ring resembles two O-rings that have been joined together with their sealing surfaces intersecting in an X pattern. The X-ring design also helps to maintain a more consistent seal during dynamic applications or when there is relative motion between the sealing surfaces.
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