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P750VK Standard Cartridge


Our Double P750VK Standard Cartridge is designed according to API 682 / ISO 21049 regulations. It has multi-spring rotation and is suitable for pressure inversion. There is the possibility of adding an integrated pumping device and designing it bi-directionally.

Its field of operation is extended in terms of temperature and pressure. It adapts to any sealing chamber and as for its metal parts, they are also available in special materials. The torque transmission of this type of mechanical seal is optimized. In addition, the operation of the seal is completely safe thanks to said transmission of metallic torque in the rotating stationary part.

Typical Industrial Applications:

  • Light volatile and highly viscous
  • hydrocarbons
  • Oil and gas industry
  • Petrochemical industry
  • Refining technology
  • API 610 / ISO 13709 pumps
  • Process pumps

Technical characteristics

  • Sizes: d = Upto 110 mm (Upto 4.250’’)*
  • Pressure: p1 = 40 bar (580 PSI)
  • Temperature: t = -40 °C ... +220 °C (- 40 °F ...428 °F)
  • Speed = 23 m/s (75 ft/s)
  • Permissible axial movement: ± 2.0 ... 4.0 mm depending on diameter and installation situation


  • Seal face: Carbon graphite antimony impregnated (A), Silicon carbide (Q1, Q2)
  • Seat: Silicon carbide (Q1, Q2)
  • Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
  • Springs: Hastelloy® C-4 (M)
  • Metal parts: CrNiMo steel (G), Duplex (G1),Hastelloy® C-4 (M)
  • Factory and Headquarters
  • Sealmek Factory
  • Official Distributor