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Though O-rings are perhaps the most widely used sealing solution, X-rings offer an excellent alternative for many sealing applications. An X-ring is designed to fit between two parts to fill the gap between them once compressed, whereas an O-ring sits in a groove and compresses when assembled in both dynamic and static applications.

X-rings, also known as QUAD-Rings, provide additional sealing benefits over other sealing solutions with at least four sealing surfaces. The most notable advantages of QUAD-rings/X-rings over O-rings include:

-Deeper grooves for increased lubrication retention
-Four lips to provide more sealing capacity
-High stability for dynamic applications
-Resist roll more than O-ring, providing higher spiral failure resistance
-High lubrication retention to prolong the life of the seal
-Multiple seal points, requiring less compressive force to create an effective seal

At low pressures, an X-ring will slightly compress to establish a seal. When pressurized, it fits into the groove towards the clearance gap, allowing a small area that can be filled with lubricant for noise reduction and extended seal life.

Allied Metrics is a major distributor and full-service manufacturer of affordable seals and related products. We’ve been delivering high-quality sealing solutions for over 26 years. You can count on our sealing experts to find a solution that is best for your application.

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