Features

• API 682 Category 2 and 3, Type A, Arrangement 3 seal

• Dual seal in back-to-back arrangement

• Gas-lubricated

• Balanced

• Cartridge unit

• Independent of direction of rotation

• Stationary spring on process and atmospheric side

• Contact free operation, no friction

Advantages

• Universally applicable both for retrofits or original equipment

• Efficient stock keeping due to standardized components

• Extended selection of materials

• Metal parts also in special materials available

Operating range

Shaft diameter:
d1 = 20 … 110 mm (0.79" … 4.33")*
Pressure: p1 = 42 bar (609 PSI)
Temperature:
t = -20 °C … +176 °C (-4 °F … +350 °F)
Sliding velocity:
vg = 4 … 23 m/s (13 ... 76 ft/s)
Axial movement: ±1.0 mm

Materials

Seal rings: Blister resistant carbon, Silicon carbide Q19
Mating rings:
Silicon carbide SSiC (Q1), RBSiC (Q2)
Secondary seals:
EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: Hastelloy® C-4 (M)* and C-276 (M5)
Metal parts: CrNiMo steel 316 (G) or equivalent,
optional materials on request.

Recommended applications

• Refining technology

• Petrochemical industry

• Oil and gas industry

• Gases and liquids

• Media which require high purity

• Environmental harmful media

• API 610 / ISO 13709 pumps

• Process pumps

Service
Provide special design
According to the requirements and conditions for the custom processing

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