Mechanical seals

Mechanical seal Type 323 ANSI

The type 323 ANSI is a stationary double mechanical seal. The type 323 was developed for the large, so-called "big bore" seal chambers of the ANSI. The barrier space of the mechanical seal is equipped with a patented pump construction - with diversion of barrier fluid via the inner and outer faces.

  • Double balanced: Full pressurisation is possible on pump side and barrier side
  • Self-closing in case of pressure reversal
  • Tandem active double mechanical seal
  • Independent of the direction of rotation
  • Shock and vibration-dampend faces
  • Barrier fluid diversion via inner and outer faces
Technical details
Range of application*  
Pressure 700 mm Hg - 28 bar
Temp. Elastomer dependent
Sliding velocity up to 35 m/s
Shaft movements axial ≥ Ø 24 +/- 1,0 mm
  radial ≥ Ø 24 +/- 0,5 mm
Dshaft 24 - 100 mm
  1“ - 4“
  Special sizes available on request
Metals DIN 1.4571 / 316 SS
Springs Hast. C
Faces CA, SC, SSIC, TC
O-Rings FKM, EPDM, PTFE, FEP Umm., Chemraz, Kalrez, Aflas, etc.

Other sizes, materials or design variations upon request.
* Maximum temperature / pressure / speed indicates operating extremes independently and does not imply the seal will function at these extremes at the same time. Contact DEPAC if in doubt.