PUSHER MECHANICAL SEAL H75VN

Features

• 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

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

Recommended applications

• Process industry
• Oil and gas industry
• Refining technology
• Petrochemical industry
• Power plant technology

• Light hydrocarbons
• Hot water

• API 610 / ISO 13709 pumps
• Process pumps