X Ring, also known as quad ring, are four-lobed sealing rings designed to provide superior sealing performance compared to standard O-rings.
Their unique geometry reduces friction, prevents twisting, and improves sealing reliability in both static and dynamic applications.
X-rings are designed to be interchangeable with standard O-rings(AS568: American standard sizes)

Feature特点	X-Ring AdvantageX型环优势
Anti-Twist / Anti-Roll防扭转/防滚动	The X-shaped cross-section provides four contact points, preventing the seal from rolling or spiraling in the groove—a common failure mode for O-rings in reciprocating motion. X型截面提供四个接触点，防止密封件在沟槽中滚动或螺旋形扭转——这是往复运动中O型环常见的失效模式。
Lower Friction更低摩擦力	With only the four sealing lips making contact (as opposed to the full circular surface of an O-ring), running friction is significantly reduced. This minimizes stick-slip (chatter) and breakaway forces, especially after extended downtime. 仅有四个密封唇接触（而非O型圈的整个圆形表面），运行摩擦显著降低。这最大限度地减少了粘滑（颤振）和启动力，尤其是在长时间停机之后。
Superior Lubrication卓越的润滑性能	The built-in lubrication cavities ensure a continuous oil film between the seal and hardware, reducing wear and extending service life. 内置的润滑腔确保密封件与硬件之间形成连续的油膜，减少磨损并延长使用寿命。
Better Sealing at Low Pressure 低压下更好的密封性	The multiple sealing lips provide a more effective barrier at zero or low system pressure compared to standard O-rings, which rely solely on initial squeeze. 与仅依赖初始压缩的普通O型圈相比，多重密封唇在零压或低系统压力下能提供更有效的密封屏障。
Longer Service Life更长的使用寿命	Reduced friction, anti-twist properties, and better lubrication all contribute to significantly longer service life compared to standard O-rings. 与标准O型圈相比，摩擦力降低、防扭转特性以及更好的润滑性能，共同显著延长了其使用寿命。
Suitable for Extreme Pressure 适用于极高压力	The multi-lip design provides increased resistance to extrusion at higher pressures, often eliminating the need for separate anti-extrusion backup rings in many applications. 多唇设计在更高压力下提供了更强的抗挤出能力，在许多应用中通常无需单独使用防挤出支撑环。