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FeaturesEquivalent to Burgmann Cartex-GSDNStationary springsRotating seatDouble sealBalancedCartridge unitStandard version with V-grooves,U-grooves optional (independent of direction of rotation)Gas-lubricated, gas-bufferedDoes not open in the event of buffer pressure failure, self closing at pressure reversalAdvantagesContact-free operationNo friction on the seal faces, no heat generated at the seal or in the mediumNo additional complex components to dissipate frictional heatMaximum environmental protection and maximum efficiencyOperating rangeShaft diameter: d1 = 30 … 100 mm (1.18& quot; ... 3.94& quot;)Pressure:p1 = 13 bar (189 PSI),p3 = 16 bar (232 PSI)with V-grooves (uni-directional)p1 = 9 bar (131 PSI),p3 = 12 bar (174 PSI)with U-grooves (bi-directional)Differential pressure (p3 - p1) = min. 3 bar (44 PSI)Operating temperature limits for:EPDM -20 °C … +140 °C (-4 °F ... +284 °F)FFKM -20 °C … +120 °C (-4 °F ... 248 °F)FKM -20 °C … +170 °C (-4 °F ... 338 °F)Sliding velocity: vg = 4 … 15 m/s (13 ... 49 ft/s)Axial movement: ± 1.0 mmMaterialsSeal face: Silicon carbide (Q1/Q19)Seat: Silicon carbide (Q19/Q1)Secondary seals: FKM (V), EPDM (E),FFKM (K)Spring: Hastelloy? C-4 (M)Metal parts: CrNiMo steel (G), Hastelloy?C-4 (M)ServiceProvide special designAccording to the requirements and conditions for the custom processingEnactus?-Cartex-GSDN Dimensions(mm)d1 d2 d3(min) d3(max) l4 l5 l6 l7 a2 da s 3052545725.486335367105143355576025.486335370108143557.5596225.486335372110143861637025.486335375123144061637025.486335377123164364667025.486335380133164567687525.486335382138164870717725.486335385138165071737825.486335387148165375.3778228.589335697148186083.5859028.58933561041551865939510225.410041.658.4116163187010110211025.410041.658.412417818751071081192810741.658.412919318801111111242810741.658.412919818901211211312810741.658.4140205221001301321442810741.658.415421822