U-Rings 

What are U-rings?

U-shaped cup seals or U-ring seals prevent fluids inside cylinders from leaking out. They are commonly used in linear applications for sealing rods or pistons. Many of the different U-Cup configurations are designed for demanding applications. YEI produces U-rings from a broad range of materials, including designs such as Loaded/ Non-loaded/ Hydraulic or Pneumatic for your application.

U-rings work well with lubrication oils, mineral oils, hydraulic oils, and emulsions of high water content.

Common Applications

• Pneumatic cylinders
• Hydraulic cylinders
• Presses
• Lifts

Cross Sectional Representation of an U-ring