Dual-cartridge mechanical seal

pumpmetalsteel

Dual seal Cartridge Balanced Independent of direction of rotation Double pressure balanced Integrated pumping device Variants available: for eccentric screw pumps (-Vario) and gas-lubricated version (-GSDN) Advantages Ideal seal for standardizations Universal applicable for packings conversions, retrofits or OEM No dimensional modification of the seal chamber (centrifugal pumps) 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 Individual adaptation to pump design possible Customer specific versions available Operating range Shaft diameter: d1 = 25 ... 100 mm (1.000" ... 4.000" Other sizes on request Sliding face material combination BQ1 Sliding velocity: vg = 16 m/s (52 ft/s) Sliding face material combination Q1Q1 or U2Q1 Sliding velocity: vg = 10 m/s (33 ft/s) Recommended supply medium: max. ISO VG 5 Axial movement: ±1.0 mm, d1 ≥75 mm ±1.5 mm Materials Seal face: Silicon carbide (Q1), Carbon graphite resin impregnated (B), Tungsten carbide (U2) Seat: Silicon carbide (Q1) Secondary seals: FKM (V), EPDM (E), FFKM (K), Perfluorocarbon rubber/PTFE (U1) Springs: Hastelloy® C-4 (M) Metal parts: CrNiMo steel (G), CrNiMo cast steel (G) Recommended applications 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