← Back to Basic Seal

X-ring

X-ring product photo (cross-section profile)

A double-acting seal with four sealing lips, used in static, dynamic, and rotary applications to prevent fluid leakage.

Dimensions

Static and dynamic uses share the same sizing as O-rings (AS568), while rotary applications require a slightly larger size than the shaft diameter.

Standards

AS568 (American Standard) — same as O-ring

Advantages

1

No leakage caused by burrs or parting lines, since they never contact the sealing surface.

2

No twisting in reciprocating/rotary motion, making it more stable than an O-ring.

3

Lower compression than an O-ring, minimizing friction and improving wear resistance.

4

Good sealing performance between different media, such as liquid and gas.