U cups

“U” cups are elastic sealing elements which are used primarily for sealing pistons and cylinders in hydraulics and pneumatics. The sealing function is achieved by applying pressure with the sealing lip both on the piston and the cylinder. "U" cups are axial rubber sealing elements. They are manufactured in various forms depending on their function. Our production line consists of five different forms.

The materials which are used to produce the "U" cups are:

  • Acrylonitrile-butadiene rubber (NBR)
  • Flour (FPM)


Cylinder "U" cup
Maximum pressure: 16Mpa

Equilateral "U" cup
Maximum pressure: 16Mpa

Piston "U" cup
Maximum pressure: 16Mpa 

"O" ring "U" cup 
Maximum pressure: 16Mpa 

Pressurizing ring "U" cup 
Maximum pressure: 25Mpa