Burgmann M3N/M32/M37
M3N mechanical seals are immensely popular. Extremely rugged and reliable.
M3N covers a wide spectrum of applications- in water pumps, sewage pumps, submersiable pumps, chemical pumps, etc.
Design Features
Comply with DIN 24960
R/H and L/H spring
M32 is Carbon shrink-fitted in rotary face
M37 is SIC or TC rotary face
Materials available
Seal face: Carbon/SIC, SIC/SIC
Elastomer: Nitrile, Viton, Neoprene, EPDM
Standard seat G4, G9, G6 G13
Operating Conditions
Temperature: -30°C to +260°C
Pressure: Up to 10 bar , 145 psi
Speed: Up to 10m/s, 2000fpm
Depending on medium, size and material
| D(mm) | D1 | D2 | L1 (M37) | L2 |
| 10 | 20.0 | 19.2 | 16.9 | 6.6 |
| 12 | 22.0 | 21.6 | 17.4 | 5.6 |
| 14 | 24.0 | 24.6 | 16.5 | 5.6 |
| 16 | 26.0 | 28.0 | 16.5 | 7.5 |
| 18 | 31.0 | 30.0 | 18.0 | 8.0 |
| 20 | 34.0 | 36.0 | 19.0 | 8.0 |
| 22 | 36.0 | 35.0 | 20.5 | 7.5 |
| 24 | 38.0 | 38.0 | 22.0 | 7.5 |
| 25 | 39.0 | 38.0 | 23.5 | 7.5 |
| 28 | 42.0 | 42.0 | 23.5 | 9.0 |
| 30 | 44.0 | 45.0 | 24.5 | 10.5 |
| 32 | 46.0 | 48.0 | 28.0 | 10.5 |
| 35 | 49.0 | 52.0 | 28.0 | 11.0 |
| 38 | 54.0 | 55.0 | 31.0 | 10.3 |
| 40 | 56.0 | 58.0 | 34.0 | 10.8 |
| 45 | 61.0 | 64.0 | 36.5 | 11.6 |
| 48 | 61.0 | 68.4 | 42.0 | 11.6 |
| 50 | 66.0 | 69.3 | 43.0 | 11.6 |
| 55 | 71.0 | 75.4 | 47.0 | 13.3 |
| 58 | 78.0 | 78.4 | 51.0 | 13.3 |
| 60 | 79.0 | 80.4 | 51.0 | 13.3 |
| 65 | 85.0 | 85.4 | 52.0 | 13.0 |
| 68 | 88.0 | 91.5 | 54.0 | 13.7 |
| 70 | 90.0 | 92.0 | 54.0 | 13.0 |
| 75 | 98.0 | 99.0 | 54.0 | 14.0 |
| 80 | 103.0 | 104.0 | 58.0 | 15.0 |
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