The R-CARTEX(DN) double cartridge seal is a fully assembled unit for use in pump stuffing boxes. With any direction of rotation, with double hydraulic relief - the R-CARTEX(DN) seal has proven itself perfectly in the chemical, petrochemical, pharmaceutical, sugar and food, paper industries. The built-in seal fluid circulation system makes it possible to do without additional circulation devices. A seal fluid supply system is required. Shaft diameter: d1 = 25 ... 100 mm (1,000 ... 4,000") Temperature: t = -40°C ... 220°C (-40°F ... 428°F) For graphite/silicon carbide friction pair combination - operating pressure: p1 = 25 bar (363 PSI) Sliding speed: vg = 16 m/s (52 ft/s) For silicon carbide/silicon carbide or silicon carbide/tungsten carbide combination - pressure: p1 = 20 bar (290 PSI) Sliding speed: vg = 10 m/s (33 ft/s) Barrier fluid circulation system: p3 max = 25 bar (363 PSI) Δp (p3 - p1) ideal = 2 ... 3 bar (29 ... 44 psi), 7 bar (102 psi) for barrier media with poor lubricating properties. Pump start: Δp (p3 - p1) max = 25 bar (363 PSI) allowed Recommended operating medium: max. ISO VG 5 Axial displacement: ± 1.0 mm, d1 ≥75 mm ± 1.5 mm, d1 ≥75 mm ± 1.5 mm
