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Shaft diameter: 25 … 100 mm. Pressure: 25 bar (Max) Temperature: -40 °C … +300 °C Sliding velocity: vg = 20 m/s (66 ft/s) Seal ring: Carbon graphite Antimony impregnated, Silicon carbide. Mating ring: Silicon carbide, Tungsten carbide. Secondary seals: Grafoil, FEP, FKM, FFKM. Springs: Inconel 718 hardened, Hastelloy C. Metal parts: CrNiMo steel, Duplex, Carpenter 42, Hastelloy, SS 316. Double seal. Cartridge Unit. Balanced. Independent of direction of rotation. Metal bellows. Pumping device independent of direction of rotation. Ready to Fit and Factory Tested Unit. Ideal seal for standardizations. Universal applicable for packings conversions, retrofits or OEM. Trouble-free running due to bellows unit with vibration dampers. Self cleaning effect of the bellows. Straightforward and easy installation due to pre-assembled unit. No damage of the shaft by dynamically loaded O-Ring. Fluids Over 10 years of running reference in the field. Process industry. Chemical industry. Hot media. Cold media. Highly viscous media. Pumps. Special rotating equipment.