Standard Loaded U-Seals

U seals, or U cups, are used in rod or piston applications (symmetrical U seals can be used in either application). These U seals are loaded with an o-ring between the two lips to increase the sealing force at low pressures. Standard, or Inch, sizes come in fractions of an inch. For any questions, or if you can't find what you're looking for, please contact us at 1 (800) 445-7803 or at