M7N Burgmann mechanical seals

M7N

Features

  • For plain shafts
  • Single seal
  • Unbalanced
  • Super-Sinus-spring
  • Independent of direction of rotation

Advantages

  • Universal application opportunities
  • Efficient stock keeping due to easily interchangeable faces
  • Extended selection of materials
  • Insensitive to low solids contents
  • Flexibility in torque transmissions
  • Self cleaning effect
  • Short installation length possible (G16)
  • Pumping screw for media with higher viscosity (M7..F)

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:
1.d1 = up to 25 mm: ±1.0 mm
2.d1 = 28 up to 63 mm: ±1.5 mm
3.d1 = from 65 mm: ±2.0 mm

M7N Materials

Seal face: Silicon carbide (Q1)
Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1)
Seat G4, G6 (Q1), Seat G13 (A, B)Secondary seals: EPDM (E), FKM (V), FFKM (K)
Springs: CrNiMo steel (G)
Metal parts: CrNiMo steel (G), Duplex (G1)

Standards and approvals

  • EN 12756

 

Download catalog for more information:M7N