X-Rings

X-Rings Description

X-Rings have a sealing function doubling that of an o-ring, and can be used in numerous static and dynamic sealing applications.

Compared to a standard o-ring, the four-lobed X-Ring profile maintains twice the sealing surface. The double-seal action requires less squeeze to maintain an effective seal function. With a reduction in squeeze, this yields lower friction and prolonged seal life.

To prevent leakage, which typically results from a parting line’s irregular surface on an o-ring, the parting lines on an X-Ring are between the lobes, and away from the sealing surface.

X-Rings are also made to surpass the performance of a standard o-ring in rotary seal applications. The four-lobed design produces a more secure seal to counteract spiral twisting. This allows the use of a narrower groove width than a standard o-ring groove, but can also be used in a standard o-ring groove.

The X-Ring Cross-Section and ID are measured just like o-rings. Please refer to our sizing charts for dimensions. Global O-Ring and Seal offers X-Rings in standard AS568 sizes, as well as metric sizes. Our part naming convention in the online store is a “Q” preceding the material, durometer, and size. For example, part number QN70230 is an X-Ring made with Nitrile material at 70 durometer in the 230 AS568 size.

For more information or to request a quote on X-Rings, please give us a call at 832-448-5550 or submit the Product Inquiry Form.

Advantages of X-Rings vs. O-Rings

• Prevents contorting in the groove. The seal is not apt to roll in the groove with corresponding movement.
• Low friction. It requires less radial squeeze compared to a standard o-ring.
• Less wear due to low friction, thus providing a longer service life.
• Excellent sealing efficiency with its special profile.
• Improved startup with the lubricant reservoir formed between the sealing lips.