Symmetrical Seals can be used as either Rod or Piston Seals. Both the outer and inner sealing lips are designed and manufactured to optimize both Rod and Piston sealing applications. Symmetrical seals exist because they can be used for both applications, and lets users keep less stock on hand. Royal's Symmetrical sealing profiles are offered in either traditional U-Cup profiles, O-ring energized U-Cup profiles, or other Energized U cup type seals. Check the Profile List below

For optimal sealing performance asymmetrical Rod and Piston seals offer superior performance. Symmetrical seals lack some of the specific features like specialized lip sealing configurations and secondary sealing lips. However, Symmetrical Rod and Piston seals offer great performance for a wide range of hydraulic sealing applications.