Mechanical Seal US4A
29 September 2017
Mechanical Seal UM3A
29 September 2017

Mechanical Seal US3A

Heavy duty solutions for low and medium pressures operations.

Heavy duty solution for low and medium operations are widely used in the chemical industry and waterworks.
The US3A has a type A pinned stationary seat. Manufactured in accordance with UNI EN 12756 (ex DIN 24960).
The mechanical seal is suitable for clockwise and 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 fittered when assembling the seal on shafts with keyways, threads or sharp edges.
The US3A version is supplied with a single spring and is more suitable for moderately dirty 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
  • Suitable for dirty liquids (single spring)
  • 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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