Split mechanical seal Type 390

The split mechanical seal type 390 convinces through perfect technology, high reliability and low procurement and operating costs. The 390 was designed to enable expensive losses of production to be avoided in the best possible way.

The DEPAC 390 is easy and simple to mount. There is no need to dis assemble a large pump to do so. Conversion to the DEPAC 390 - for instance if you have used a system with packings up to now - is extremely easy.


  • No unit disassembly
  • Simple conversion from packings to mechanical seal
  • Reliable in use with media containing solids
  • Easy, simple installation
  • Low operating costs
  • Hardly any interruption in production
Technical details
Range of application*  
Pressure up to 12 bar
Temp. Elastomer dependent
Sliding velocity up to 15 m/s
Shaft movements axial ≤ Ø 140 +/- 1,0 mm | ≥ Ø 145 +/- 2,0 mm
  radial ≤ Ø 140 +/- 0,5 mm | ≥ Ø 145 +/- 1,0 mm
Dshaft 50 - 200 mm
  2“ - 7 ¾“
  Special sizes available on request
Metals DIN 1.4571 (316 xx)
Springs Hast. C
Faces CA, SC

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.