Visually, the “X-Ring” seals stands out for its profile, from which
it takes its name.
This kind of gasket was developed to solve the problem of a
conventional O-ring in high pressure hydraulic services.
The reciprocating motion causes the seal to rotate on its axial axis,
resulting in wear.
The housing of an O-ring of circular cross-section must be wide
enough to allow a certain inter-verage of the seal. However, in a long stroke or high speed alternative motion, the beams may stretch and eventually tear the O-ring compromising its tightness.
The four-lobe configuration and flexibility of the X-Ring allows it to
resist the distortion and extrusion that pressure pulsations or high pressures of hydraulic cylinders frequently cause.
And since the contact area is smaller, friction and therefore wear is also reduced.