Alternative to:
Burgmann type M37G 
Features
• For plain shafts
• Single seal
• Unbalanced
• Rotating conical spring
• Dependent on direction of rotation
Advantages
• Universal application opportunities
• Insensitive to low solids content
• No damage of the shaft by set screws
• Large choice of materials
• Short installation lengths possible (G16)
• Variants with shrink-fitted seal face available
Operating range (see note on page 1)
Shaft diameter: d1 = 6 … 80 mm (0.24" … 3.15")
Pressure: p1 = 10 bar (145 PSI)
Temperature: t = -20 °C … +140 °C (-4 °F … +355 °F)
Sliding velocity: vg = 15 m/s (50 ft/s)
Axial movement: ±1.0 mm
Materials
Seal face: CrMo special cast steel (S)
Seat G9: Carbon graphite antimony impregnated (A),
Carbon graphite resin impregnated (B)
Standards and approvals
• EN 12756
Recommended applications
• Chemical industry
• Pulp and paper industry
• Water and waste water technology
• Building services industry
• Food and beverage industry
• Sugar industry
• Low solids content media
• Water and sewage water pumps
• Submersible pumps
• Chemical standard pumps
• Eccentric screw pumps
• Cooling water pumps
• Basic sterile applications
M3
Items and description as M3N.
Seal face: Special cast CrMo steel (S)
Seat G13: Carbon graphite antimony impregnated (A),
Carbon graphite resin impregnated (B)
M32
Items and descriptions as for type M3N, but with carbon
graphite seal face shrink-fitted into the seal face carrier
(Item no. 1.1).
Seal face: Carbon graphite antimony impregnated (A),
Carbon graphite resin impregnated (B)
Seat G4: Special cast CrMo steel (S),
Silicon carbide (Q1, Q2)
Seat G6 (M32N4): Special cast CrMo steel (S),
Silicon carbide (Q1, Q2)
Seat G9 (M32N): Silicon carbide (Q1, Q2)
Seat G6 also available in A, B = G30 (longer installation
length than G6)
M37G
Items and descriptions as for type M3N, but with shrink
fitted silicon carbide seal face to the seal face carrier
(Item no. 1.1)
Shaft diameter: d1 = 16 … 80 mm (0.63" … 3.15")
Temperature: t = -20 °C … +180 °C (-4 °F … +355 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)
Seal face: Silicon carbide (Q12, Q22),
Tungsten carbide (U22)
Seat G4: Silicon carbide (Q1, Q2)
Seat G13: Carbon graphite antimony impregnated (A),
Carbon graphite resin impregnated (B)
Seat G6 (M37GN4): Silicon carbide (Q1, Q2)
Seat G9 (M37GN): Carbon graphite antimony impregnated
(A), Carbon graphite resin impregnated (B),
Silicon carbide (Q1, Q2)
Seat G6 also available in A, B = G30 (longer installation
length than G6)
Product variants