U-ring DUM


Application Hydraulics + pneumatics
Design Metric
Design U-ring
Media Mineral oils, Water-air
Material Seal: NBR 90° Shore A
Installation on multi-part pistons B, on one-piece pistons A
Operating pressure up to 120 bar


Low-friction seal.
Simple solution.
For rods and pistons.


Dimensions see page Rod seals ...

Article Table

Product Name D mm d mm L mm H mm
Product Name D mm d mm L mm H mm
DUM 12 05 12 5 6,5 5,0

Order hints

We are able to produce seals with diameters of 20 to 510 mm with short lead times.


Despite careful checking, we cannot guarantee the accuracy of all information included on this site, and we accept no liability.
All data and information in our online catalogue are based on currently valid standards and the regulations from the employer's liability insurance association. Product safety can only be guaranteed when our assembly instructions are carefully observed. Non-adherence to these regulations can affect product operation and functioning and result in a loss of warranty. Our warranty is only valid for HANSA-FLEX products. Our products are constantly subject to further development and technical changes are therefore possible.