FTLB500 has the same design and size as the original Bergmann LB500,
which can be a good substitute for the original product.
FTLB500 is single , Balanced,and independent of direction of
rotation seal .Due to clutch drive between seal head and drive collar ,
FTH3B has excellent torque transmission.
Operating range
Pressure: p = 12 bar
Temperature:
t = -20 °C ... +160 °C
Sliding velocity: vg = 20 m/s
Viscosity: ... 300 mPa·s
Solids content: ... 7 %
Materials
Seal face and seat: Silicon carbide
Tungsten carbide
Secondary seals: FKM (V)
Metal parts: SS304/SS316
Recommended applications
Process industry
Oil and gas industry
High viscous media (tar, heavy oils)
Process pumps
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| d | d1 | d2 | d3 | d4 | L | L1 | L2 |
| 25 | 20 | 39 | 29 | 35 | 44 | 34 | 24 |
| 28 | 24 | 42 | 33 | 39 | 44 | 34 | 24 |
| 30 | 25 | 44 | 34 | 40 | 44 | 34 | 24 |
| 32 | 27 | 46 | 37 | 43 | 44 | 34 | 24 |
| 33 | 28 | 47 | 37 | 43 | 44 | 34 | 24 |
| 35 | 30 | 49 | 39 | 45 | 44 | 34 | 24 |
| 38 | 33 | 55 | 42 | 48 | 45 | 35 | 25 |
| 40 | 35 | 57 | 44 | 50 | 45 | 35 | 25 |
| 42 | 37 | 59 | 49 | 56 | 48 | 37 | 25 |
| 43 | 38 | 60 | 49 | 56 | 48 | 37 | 25 |
| 45 | 40 | 62 | 51 | 58 | 48 | 37 | 25 |
| 48 | 43 | 65 | 54 | 61 | 48 | 37 | 25 |
| 50 | 45 | 67 | 56 | 63 | 48 | 37 | 25 |
| 53 | 48 | 70 | 59 | 66 | 48 | 37 | 25 |
| 55 | 50 | 72 | 62 | 70 | 50 | 37 | 25 |
| 60 | 55 | 77 | 67 | 75 | 50 | 37 | 25 |
| 63 | 58 | 80 | 70 | 78 | 50 | 37 | 25 |
| 65 | 60 | 82 | 72 | 80 | 50 | 37 | 25 |
| 70 | 65 | 87 | 77 | 85 | 50 | 37 | 25 |
| 75 | 70 | 92 | 83 | 92 | 53 | 37 | 25 |
| 80 | 75 | 97 | 88 | 97 | 53 | 38 | 25 |
| 85 | 80 | 102 | 95 | 1005 | 53 | 38 | 25 |
| 90 | 85 | 107 | 100 | 110 | 53 | 37.5 | 25 |
| 95 | 90 | 112 | 105 | 115 | 53 | 37.5 | 25 |
| 100 | 95 | 117 | 110 | 120 | 53 | 37.5 | 25 |
| 105 | 100 | 122 | 115 | 125 | 53 | 37.5 | 25 |
| 110 | 105 | 127 | 120 | 130 | 53 | 37.5 | 25 |
