EagleBurgmann M74N Mechanical Seal For Water / Sewage Water Pumps
M74 Dimensions, items and descriptions as for M7N, but with multiple springs (Item no. 1.5).
Preferably for d1 >100 mm (3.94").
EagleBurgmann M74N Mechanical Seal for:
Water / sewage water pumps
Chemical standard pumps
Vertical screw pumps
Gear wheel feed pumps
Multistage pumps (drive side)
Circulation of printing colors with viscosity 500 ... 15,000 mm 2 /s.
Recommended applications
Process industry
Chemical industry
Pulp and paper industry
Water and waste water technology
Shipbuilding
Lube oils
Low solids content media.
Operating range
Shaft diameter: d1 = 14 ... 100 mm (0.55 " … 3.94 ")
Pressure: p1 = 25 bar (363 PSI)
Temperature: t = -50 °C ... +220 °C (-58 °F ... +428 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
Axial movement:
d1 = up to 25 mm: ± 1.0 mm
d1 = 28 up to 63 mm: ± 1.5 mm
d1 = from 65 mm: ± 2.0 mm
Materials
Seal face: Special cast CrMo steel (S),
Silicon carbide (Q1, Q2), Aluminium oxide
(V)
Seat G9: Carbon graphite antimony
impregnated (A), Carbon graphite resin
impregnated (B), Silicon carbide (Q1*, Q2*)
Seat G4: Silicon carbide (Q1*, Q2*)
Seat G6: Silicon carbide (Q1*, Q2*)
Seat G13: Carbon graphite antimony
impregnated (A), Carbon graphite resin
impregnated (B)
Secondary seals: EPDM (E), NBR (P), FKM
(V), FFKM (K)
Springs: CrNiMo steel (G) Metal parts:
CrNiMo steel (G), Duplex (G1)
