2、其机械密封由英国格兰盘根公司与国内联合制造，机械密封采用负压装置，在长期输送介质的状态下，机械密封不承受工作压力。其性能十分可靠，维修方便，节约能源，有效地解决了泄漏问题，。
3、性能参数表
| 规格型号 | 流量 | 扬程(m) | 口径 | 配用电机 | 转速r/min | 允许吸上 | 效率 | |
| 吸入 | 吐出 | |||||||
| 25FSJB-10 | 1.5 | 10 | 25 | 20 | 2.2 | 2900 | 6 | 29 |
| 25FSJB-18 | 3.6 | 18 | 25 | 20 | 2.2 | 2900 | 6 | 27 |
| 40FSJB-15 | 10 | 15 | 40 | 32 | 3 | 2900 | 6 | 40 |
| 40FSJB-20 | 10 | 20 | 40 | 32 | 3 | 2900 | 6 | 42 |
| 40FSJB-30 | 10 | 30 | 40 | 32 | 3 | 2900 | 6 | 38 |
| 40FSJB-40 | 10 | 40 | 40 | 32 | 4 | 2900 | 5.5 | 35 |
| 40FSJB-50 | 10 | 50 | 40 | 32 | 5.5 | 2900 | 5 | 33 |
| 50FSJB-20 | 15 | 20 | 50 | 40 | 4 | 2900 | 6 | 51 |
| 50FSJB-25 | 15 | 25 | 50 | 40 | 4 | 2900 | 6 | 49 |
| 50FSJB-30 | 15 | 30 | 50 | 40 | 4 | 2900 | 6 | 44.5 |
| 50FSJB-40 | 15 | 40 | 50 | 32 | 5.5 | 2900 | 5.5 | 35 |
| 50FSJB-50 | 15 | 50 | 50 | 32 | 7.5 | 2900 | 5.5 | 33 |
| 65FSJB-32 | 29 | 32 | 65 | 50 | 5.5 | 2900 | 6 | 57 |
| 65FSJB-40 | 29 | 40 | 65 | 40 | 7.5 | 2900 | 5.5 | 53 |
| 65FSJB-50 | 29 | 50 | 65 | 40 | 11 | 2900 | 5.5 | 46 |
| 80FSJB-20 | 50 | 20 | 80 | 65 | 7.5 | 2900 | 6 | 69 |
| 80FSJB-30 | 50 | 30 | 80 | 65 | 7.5 | 2900 | 5.5 | 64 |
| 80FSJB-34 | 50 | 34 | 80 | 65 | 11 | 2900 | 5.5 | 64 |
| 80FSJB-38 | 50 | 38 | 80 | 65 | 11 | 2900 | 5.5 | 64 |
| 80FSJB-50 | 50 | 50 | 80 | 50 | 15 | 2900 | 6 | 53 |
| 80FSJB-80 | 50 | 80 | 80 | 50 | 22 | 2900 | 5.5 | 36 |
| 100FSJB-32 | 100 | 32 | 100 | 80 | 18.5 | 2900 | 5.5 | 70 |
| 100FSJB-40 | 100 | 40 | 100 | 80 | 22 | 2900 | 5.5 | 70 |
| 100FSJB-50 | 100 | 50 | 100 | 65 | 30 | 2900 | 5.5 | 62 |
| 125FSJB-32 | 125 | 32 | 125 | 80 | 30 | 2900 | 5.5 | 72 |
| 125FSJB-50 | 125 | 50 | 125 | 100 | 45 | 2900 | 5.5 | 64 |
| 150FSJB-32 | 200 | 32 | 150 | 100 | 30 | 1450 | 6 | 77 |
| 150FSJB-50 | 200 | 50 | 150 | 100 | 55 | 1450 | 4.5 | 70 |
