Mechanical seal type 270

The DEPAC mechanical seal type 270 is a stationary single-cartridge seal that is extremely well suited for conversions from gland packing to mechanical seal, since modification of the unit is not usually necessary. The stationary design principle developed by DEPAC for the process industry also offers maximum running reliability even in difficult ranges of applications for mechanical seals.


  • Stationary design principle
  • Ideal for conversions from gland packings to mechanical seals
  • Extremely well suited for standardisations
  • Cartridge-mounted
  • Balanced
  • Independent of the direction of rotation
  • Multiple springs made of Hastelloy C
  • Springs outside the medium - no blockage of the springs
  • Vibration-dampend stationary face support
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 22 +/- 0,5 mm | ≥ Ø 24 +/- 1,0 mm
  radial ≤ Ø 22 +/- 0,4 mm | ≥ Ø 24 +/- 0,5 mm
Dshaft 16 - 160 mm
  1“ - 6 ¼“
  Special sizes available on request
Metals DIN 1.4571/Hast. C
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.