685 Metal Bellow Mechanical Seal Replace Burgmann MFL85N
Description:
685 Mechanical Seal
For big compressors and industrial pumps
Replacing the mechanical seal of Burgmann MFL85N
Operational Conditions:
Temperature: -20℃ to +200℃
Pressure: ≤2.1MPa
Speed: ≤23m/s
Materials:
Stationary Ring：TC, Silicon Carbide
Rotary Ring：Carbon ,Silicon Carbide,TC
Secondary Seal：NBR,EPDM,Viton
Bellows：Steel
Spring and Metal Parts：Steel
Applications:
Oil, light hydrocarbon,
aromatic Hydrocarbon,
organic solvents,
week acids, ammonia
| d (mm) | D3 | D2 | L1 | L3 |
| 16 | 30 | 27 | 32.5 | 10 |
| 18 | 32 | 33 | 30.5 | 11.5 |
| 20 | 33.5 | 35 | 30.5 | 11.5 |
| 22 | 36.5 | 37 | 30.5 | 11.5 |
| 24 | 39 | 39 | 28.5 | 11.5 |
| 25 | 39.6 | 40 | 28.5 | 11.5 |
| 28 | 42.8 | 43 | 31 | 11.5 |
| 30 | 45 | 45 | 31 | 11.5 |
| 32 | 46 | 48 | 31 | 11.5 |
| 33 | 48 | 48 | 31 | 11.5 |
| 35 | 49.2 | 50 | 31 | 11.5 |
| 38 | 52.3 | 56 | 31 | 14 |
| 40 | 55.5 | 58 | 31 | 14 |
| 43 | 57.5 | 61 | 31 | 14 |
| 45 | 58.7 | 63 | 31 | 14 |
| 48 | 61.9 | 66 | 31 | 14 |
| 50 | 65 | 70 | 32.5 | 15 |
| 53 | 682 | 73 | 32.5 | 15 |
| 55 | 70 | 75 | 32.5 | 15 |
| 58 | 71.7 | 78 | 37.5 | 15 |
| 60 | 74.6 | 80 | 37.5 | 15 |
| 63 | 79 | 83 | 37.5 | 15 |
| 65 | 84.1 | 85 | 37.5 | 15 |
| 68 | 87.3 | 90 | 34.5 | 18 |
| 70 | 87.3 | 92 | 42 | 18 |
| 75 | 95 | 97 | 42 | 18 |
| 80 | 98.4 | 105 | 41.8 | 18.2 |
| 85 | 104.7 | 110 | 41.8 | 18.2 |
| 90 | 111 | 115 | 46.8 | 18.2 |
| 95 | 114 | 120 | 47.8 | 17.2 |
| 100 | 117.4 | 125 | 47.8 | 17.2 |
