The Difference between X-ring And O-ring

X-rings and O-rings are both common seals, but there are some differences in their structure, performance and applicable scenarios.

1. Shape and structure

• O-rings: The cross section is circular and looks like the letter "O". It has a simple shape and is usually sealed by compression and deformation.

• X-rings: The cross section is "X"-shaped, shaped like the letter "X" or two inverted "V"s stacked together. Four lips are added to its cross section to form multiple sealing contact points.

2. Sealing performance

• O-rings: There are few sealing surfaces and they are usually sealed by a single contact surface, so they are prone to extrusion or leakage in certain high-pressure environments.

• X-rings: The four lips provide multiple sealing surfaces, which can better disperse the pressure, provide higher sealing and anti-extrusion performance, and are particularly suitable for high-pressure occasions.

3. Torsion resistance

• O-rings: They are prone to twisting during movement or installation ("spiral failure"), which can cause sealing failure, especially in dynamic applications.

• X-rings: Designed with a self-locking effect, they can effectively prevent twisting and are particularly suitable for sealing in reciprocating and rotating occasions.

4. Friction

• O-ring: The friction is large, especially in dynamic applications, and it is easy to generate heat due to friction and cause wear.

• X-ring: The friction is small, because its shape can disperse stress and friction, suitable for long-term dynamic sealing applications, reduce wear and extend service life.

5. Application scenarios

• O-ring: used for static sealing or dynamic sealing in low-pressure environments, widely used in ordinary hydraulic and pneumatic systems.

• X-ring: more suitable for high-pressure, reciprocating dynamic sealing occasions, such as high-pressure hydraulic systems, rotating shaft seals, etc.

Summary

In general, O-rings have a simple structure and low cost, suitable for general sealing needs; X-rings have good sealing effect, excellent anti-extrusion and anti-torsion performance, and are suitable for high-pressure or dynamic sealing environments. Jinwoseal produces high-quality O-rings and X-rings, come and choose the sealing solution that suits you.