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Shaft diameter: 25 … 100 mm. Pressure: Up to 25 bar Temperature: -50 °C … +200 °C Seal ring: Silicon carbide, Tungsten carbide. Mating ring: Silicon carbide, Tungsten carbide. Secondary seals: FEP, FKM, Kalrez, FFKM. Springs: SS 316, Hastelloy C. Metal parts: SS 316, other materials on request. Dual seal. Cartridge. Balanced. Independent of direction of rotation. Double pressure balanced. Dual Seal With Pumping Screw. Standard version with V-grooves, U-grooves optional (independent of direction of rotation) . Ideal seal for standardizations . Universal applicable for packings conversions . No dimensional modification of the seal chamber necessary, small radial installation height. No damage of the shaft by dynamically loaded O-Ring. Extended service life. No damage caused by dirt entered during assembly. Straightforward and easy installation due to pre-assembled unit . Petrochemical industry. Chemical industry. Pharmaceutical industry. Power plant technology. Pulp and paper industry. Mining industry. Food and beverage industry. Sugar industry. Universally applicable. Centrifugal pumps. Eccentric screw pumps.