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O-Ring Mechanical Seals
ST155 Fitting Dimension(mm)
| TYPE | D1(h6) | D2(max) | D3(H8) | L1(±0.5) | L2 | L3 |
| ST155-10 | 10 | 20 | 18.1 | 20.5 | 15 | 5.5 |
| ST155-11 | 11 | 22 | 20.6 | 23.5 | 18 | 5.5 |
| ST155-12 | 12 | 22 | 20.6 | 23.5 | 18 | 5.5 |
| ST155-13 | 13 | 25 | 23.1 | 28.0 | 22 | 6 |
| ST155-14 | 14 | 25 | 23.1 | 28.0 | 22 | 6 |
| ST155-15 | 15 | 29 | 26.9 | 30.0 | 23 | 7 |
| ST155-16 | 16 | 29 | 26.9 | 30.0 | 23 | 7 |
| ST155-17 | 17 | 29 | 26.9 | 30.0 | 23 | 7 |
| ST155-18 | 18 | 33 | 30.9 | 32.0 | 24 | 8 |
| ST155-19 | 19 | 33 | 30.9 | 33.0 | 25 | 8 |
| ST155-20 | 20 | 33 | 30.9 | 33.0 | 25 | 8 |
| ST155-22 | 22 | 38 | 35.4 | 33.0 | 25 | 8 |
| ST155-24 | 24 | 38 | 35.4 | 35.0 | 27 | 8 |
| ST155-25 | 25 | 40 | 38.2 | 35.5 | 27 | 8.5 |
| ST155-28 | 28 | 46 | 43.3 | 39.0 | 30 | 9 |
| ST155-29 | 29 | 46 | 43.3 | 39.0 | 30 | 9 |
| ST155-30 | 30 | 46 | 43.3 | 39.0 | 30 | 9 |
| ST155-32 | 32 | 46 | 43.3 | 39.0 | 30 | 9 |
| ST155-33 | 33 | 48 | 53.5 | 50.5 | 39 | 11.5 |
| ST155-35 | 35 | 50 | 53.5 | 50.5 | 39 | 11.5 |
| ST155-38 | 38 | 58 | 60.5 | 50.5 | 39 | 11.5 |
| ST155-40 | 40 | 58 | 60.5 | 50.5 | 39 | 11.5 |