ZL 68C Mechanical Seals are widely used in rotating mechanical equipment such as pumps, compressors, mixers, etc. It usually includes a stationary ring, a rotary ring, a secondary seal, a spring and metal parts.
| d(mm) | D1 | D3 | D1 | L1 | L2 |
| 16 | 27 | 27 | 4 | 19.1 | 8.6 |
| 20 | 35 | 31 | 5 | 19.1 | 10 |
| 22 | 37 | 33 | 5 | 19.1 | 10 |
| 24 | 39 | 34.1 | 5 | 191 | 10 |
| 25 | 40 | 35.2 | 5 | 194 | 10 |
| 28 | 43 | 40 | 5 | 19.1 | 10 |
| 30 | 45 | 41 | 5 | 19.1 | 10 |
| 32 | 48 | 42.4 | 5 | 19.1 | 10 |
| 33 | 48 | 44 | 5 | 19.1 | 10 |
| 35 | 50 | 45.5 | 5 | 19.1 | 10 |
| 38 | 56 | 51.8 | 5 | 21.1 | 11 |
| 40 | 58 | 53.8 | 5 | 21.1 | 11 |
| 43 | 61 | 56 | 5 | 21.1 | 11 |
| 45 | 63 | 58.2 | 5 | 21.1 | 11 |
| 48 | 66 | 61.4 | 5 | 21.1 | 11 |
| 50 | 70 | 61.9 | 5 | 21.1 | 13 |
| 55 | 75 | 72 | 5 | 22.1 | 13 |
| 60 | 80 | 76 | 5 | 25.8 | 13 |
| 63 | 83 | 79.3 | 5 | 25.8 | 13 |
| 65 | 85 | 82.3 | 5 | 25.8 | 13 |
| 70 | 92 | 88.9 | 5 | 25.8 | 15.3 |
| 75 | 97 | 96 | 5 | 25.8 | 15.3 |
