BGM M74 M74D Chemical Pump Series Cartridge Single Spring Mechanical Seal
Product Overview
- For plain shafts
- Dual seal design
- Unbalanced configuration
- Rotating multiple springs
- Independent of direction of rotation
- Seal concept based on the M7 range
- Variant with pumping screw available (M74F-D)
Our Mechanical Seal Model M74D serves as a direct replacement for BG M74D seals, widely used in industrial pump applications. Standard material combinations include SIC/RESIN CARBON/NBR/SS304, SIC/SIC/NBR/SS304, TC/TC/NBR/SS316, and others. We offer customization options to meet specific customer requirements or can design entirely new mechanical seal types to address unique client needs.
O-Ring Mechanical Series Specifications
Operational Conditions
- Temperature Range: -20°C to +180°C
- Maximum Pressure: ≤ 2.5 MPa
- Maximum Speed: ≤ 15 m/s
Material Options
Stationary Ring: V1, Q2, Q1, U2, B, A
Rotary Ring: B, A, Q1, Q2, U2
Secondary Seal: P, E, V, M1, M2
Spring and Metal Parts: F, G, M
Standard and Alternative Seat Types
Standard: YMG92
Alternative: YMG9, YMG4, YMG6
Applications
Suitable for clean water, sewage water, oil, and other moderately corrosive fluids.
Mechanical Seal Dimensions
| d (mm) |
d3 |
d6 |
d7 |
d8 |
l1 |
l3 |
l8 |
l9 |
Mx |
| 18 | 33 | 27 | 33 | 3 | 61.0 | 38 | 19.5 | 11.5 | M5 |
| 20 | 35 | 29 | 35 | 3 | 61.0 | 38 | 19.5 | 11.5 | M5 |
| 22 | 37 | 31 | 37 | 3 | 61.0 | 38 | 19.5 | 11.5 | M5 |
| 24 | 39 | 33 | 39 | 3 | 61.0 | 38 | 19.5 | 11.5 | M5 |
| 25 | 40 | 34 | 40 | 3 | 61.0 | 38 | 19.5 | 11.5 | M5 |
| 28 | 43 | 37 | 43 | 3 | 62.0 | 39 | 19.5 | 11.5 | M6 |
| 30 | 45 | 39 | 45 | 3 | 62.0 | 39 | 19.5 | 11.5 | M6 |
| 32 | 47 | 42 | 48 | 3 | 62.0 | 39 | 19.5 | 11.5 | M6 |
| 33 | 48 | 42 | 48 | 3 | 62.0 | 39 | 19.5 | 11.5 | M6 |
| 35 | 50 | 44 | 50 | 3 | 62.0 | 39 | 19.5 | 11.5 | M6 |
| 38 | 55 | 49 | 56 | 4 | 69.0 | 41 | 22.0 | 14.0 | M6 |
| 40 | 57 | 51 | 58 | 4 | 70.0 | 42 | 22.0 | 14.0 | M6 |
| 43 | 60 | 54 | 61 | 4 | 70.0 | 42 | 22.0 | 14.0 | M6 |
| 45 | 62 | 56 | 63 | 4 | 70.0 | 42 | 22.0 | 14.0 | M6 |
| 48 | 65 | 59 | 66 | 4 | 70.0 | 42 | 22.0 | 14.0 | M6 |
| 50 | 67 | 62 | 70 | 4 | 73.0 | 43 | 23.0 | 15.0 | M6 |
| 53 | 70 | 65 | 73 | 4 | 73.0 | 43 | 23.0 | 15.0 | M6 |
| 55 | 72 | 67 | 75 | 4 | 73.0 | 43 | 23.0 | 15.0 | M8 |
| 58 | 79 | 70 | 78 | 4 | 86.0 | 56 | 23.0 | 15.0 | M8 |
| 60 | 81 | 72 | 80 | 4 | 86.0 | 56 | 23.0 | 15.0 | M8 |
| 63 | 84 | 75 | 83 | 4 | 85.0 | 55 | 23.0 | 15.0 | M8 |
| 65 | 86 | 77 | 85 | 4 | 85.0 | 55 | 23.0 | 15.0 | M8 |
| 68 | 89 | 81 | 90 | 4 | 91.0 | 55 | 26.0 | 18.0 | M8 |
| 70 | 91 | 83 | 92 | 4 | 92.0 | 56 | 26.0 | 18.0 | M8 |
| 75 | 99 | 88 | 97 | 4 | 92.0 | 56 | 26.0 | 18.0 | M8 |
| 80 | 104 | 95 | 105 | 4 | 92.5 | 56 | 26.2 | 18.2 | M8 |
| 85 | 109 | 100 | 110 | 4 | 92.5 | 56 | 26.2 | 18.2 | M8 |
| 90 | 114 | 105 | 115 | 4 | 92.5 | 56 | 26.2 | 18.2 | M8 |
| 95 | 119 | 110 | 120 | 4 | 90.5 | 56 | 25.2 | 17.2 | M8 |
| 100 | 124 | 115 | 125 | 4 | 90.5 | 56 | 25.2 | 17.2 | M8 |