H75VN Pusher Seal


 H75VN webH75VN Mechanical Pusher Seal

  • Single seal
  • Cartridge unit
  • Design acc. to API 682 / ISO 21049
  • Category 2 and 3, Type A, Arrangement 1
  • Independent of direction of rotation
  • Rotating multiple springs
  • Integrated pumping device available (H75VP)

Advantages

  • "Low-Emission-Seal" acc. to the American STLE-limits
  • Universally applicable both for retrofits or original equipment
  • Efficient stock-keeping due to standardized components
  • Extended selection of materials
  • Extended field of operation in terms of temperature and pressure
  • Metal parts also in special materials available

Recommended Applications

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

Operating Range

  • Shaft diameter: d = 20 ... 110 mm (0.79" ... 4.33")*
  • Pressure: p1 = 40 bar (580 PSI)
  • Temperature: t = -40 °C ... +220 °C (-40 °F … 428 °F)
  • Sliding velocity: vg = 23 m/s (75 ft/s)
  • Axial movement: ± 2.0 ... 4.0 mm depending on diameter and installation situation

      * Other sizes on request

Materials

  • Seal face: Carbon graphite antimony impregnated (A)
  • 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)

Standards and Approvals

  • API 682 / ISO 21049