High-quality comes 1st; support is foremost; business is cooperation” is our small business philosophy which is regularly observed and pursued by our organization for M7N water pump mechanical seal for marine industry, The principle of our corporation is always to give high-quality merchandise, expert service, and honest communication. Welcome all friends to place trial get for making a long-term enterprise partnership.
High-quality comes 1st; support is foremost; business is cooperation” is our small business philosophy which is regularly observed and pursued by our organization for , Adhering to the principle of “Enterprising and Truth-Seeking, Preciseness and Unity”, with technology as the core, our company continues to innovate, dedicated to providing you with the highest cost-effective products and meticulous after-sales service. We firmly believe that: we are outstanding as we have been specialized.
Replacement for the below mechanical seals
Burgmann M7N ,LIDERING LWS10, Latty U68, Flowserve Europac 600, Vulcan 1677, AESSEAL W07DMU, Anga V, Sterling 270, Hermetica M251.K2
Features
- For plain shafts
- Single seal
- Unbalanced
- Super-Sinus-spring or multiple springs rotating
- 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
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
Combination Material
Rotary Face
Silicon carbide (RBSIC)
Carbon graphite resin impregnated
Tungsten carbide
Cr-Ni-Mo Steel (SUS316)
Stationary Seat
Silicon carbide (RBSIC)
Carbon graphite resin impregnated
Tungsten carbide
Auxiliary Seal
Fluorocarbon-Rubber (Viton)
Ethylene-Propylene-Diene (EPDM)
Silicone-Rubber(MVQ)
PTFE Coated VITON
Spring
Stainless Steel (SUS304)
Stainless Steel (SUS316)
Metal Parts
Stainless Steel (SUS304)
Stainless Steel (SUS316)
Recommended Applications
- Process industry
- Chemical industry
- Pulp and paper industry
- Water and waste water technology
- Shipbuilding
- Lube oils
- Low solids content media
- 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 mm2/s.

Item Part no. to DIN 24250 Description
1.1 472 Seal face
1.2 412.1 O-Ring
1.3 474 Thrust ring
1.4 478 Righthand spring
1.4 479 Lefthand spring
2 475 Seat (G9)
3 412.2 O-Ring
WM7N DATA SHEET OF DIMENSION (mm)
M7N water pump mechanical seal, water pump seal for water pump











