Mechanical Seal US3A
29 September 2017
Mechanical Seal UM3A-UM3A
29 September 2017

Mechanical Seal UM3A

Heavy duty solution for low and medium pressures operations.

Heavy duty solutions for low and medium pressures operations are widely used in the chemical industry and waterworks.

The UM3A has a type A pinned stationary seat, manufactured in accordance with UNI EN 12756 (ex DIN 24960).
The mechanical seal is suitable for clockwise or anti-clockwise rotation.

Because of the three drive lugs on the rotating body, they can tolerate high levels of vibration and mechanical stress.
The O-ring is easily removable and refitted when assembling the seal on shaft with keyways, threads or sharp edges.
The UM3A is a multi-spring version more suitable for clean liquids.


20 – 100 (mm) *0 – 20 (m/sec)0 – 12 (bar g)-100 – 250 (°C)
(*) for measurements in inches, please contact our technical sales office.



  • Single seal
  • Bi-directional
  • Resistant to acids and bases
  • Resistant to mechanical stress
  • Suitable for general purpose
  • Comply with UNI EN 12756
  • Configured with FLUIGAM (energized dynamic o-ring)


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