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FeaturesAPI 682 Category 2 and 3,Website:http://www.mechanicalsealsenactus.com, Type C, Arrangement 2 and 3 seal Dual seal in face-to-back arrangement Balanced Cartridge unit Rotating metal bellows Shrink fitted seal rings and solid mating ringsAdvantagesCompact design Suited for applications with extreme high and low temperatures Absence of dynamic O-Ring eleminates/reduces seal face hang-up Bellows design minimizes variation in face load due to shaft expansion or face wear Resistant to abrasive particles in the medium, no shaft or sleeve fretting Also available in double ply designOperating rangeShaft diameter: d1 = 20 ... 110 mm (0.79& quot; ... 4.33& quot;)Pressure single ply bellows: p = vacuum ... 25 bar (... 363 PSI)*Pressure double ply bellows: p = vacuum ... 35 bar (... 508 PSI)Temperature: t = -75 °C ... +400 °C (-103 °F ... +752 °F)Sliding velocity: vg ... 23 m/s (... 75 ft/s)<* p=& quot;& quot;>20 bar (290 PSI) on request.*MaterialsSeal rings: Blister resistant carbon,Silicon carbide SSiC (Q1), RBSiC (Q2)Mating rings:Silicon carbide SSiC (Q1), RBSiC (Q2)Bellows: Inconel? 718 (M6)Secondary seals: Graphite (G)Metal parts: CrNiMo steel 316 (G),Carpenter? 42 (T4)Recommended applicationsRefining technology Oil and gas industry Petrochemical industry Chemical industry Power plant technology LPG plants API 610 / ISO 13709 pumps Process pumpsServiceProvide special designAccording to the requirements and conditions for the custom processing