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PTFE bellow seals T11, equals to Johncrane 10T . The details as followed:
| specification | d | D | D1 | D2 | L1 | L2 | L3 |
| T11-16 | 16 | 54 | 48 | 36.51 | 19.05 | 31 | 4.8 |
| T11-18 | 18 | 54 | 48 | 36.51 | 19.05 | 31 | 4.8 |
| T11-20 | 20 | 57 | 51 | 39.69 | 19.05 | 31 | 4.8 |
| T11-22 | 22 | 57 | 51 | 39.69 | 19.05 | 31 | 4.8 |
| T11-24 | 24 | 61 | 54 | 42.86 | 19.05 | 33 | 4.8 |
| T11-25 | 25 | 61 | 54 | 42.86 | 19.05 | 33 | 4.8 |
| T11-28 | 28 | 67 | 65 | 50.80 | 22.25 | 36 | 8.0 |
| T11-30 | 30 | 70 | 68 | 53.98 | 22.25 | 37 | 8.0 |
| T11-32 | 32 | 70 | 68 | 53.98 | 22.25 | 37 | 8.0 |
| T11-33 | 33 | 73 | 71 | 57.15 | 22.25 | 38 | 8.0 |
| T11-35 | 35 | 73 | 71 | 57.15 | 22.25 | 38 | 8.0 |
| T11-38 | 38 | 76 | 78 | 63.50 | 22.25 | 38 | 8.0 |
| T11-40 | 40 | 80 | 81 | 66.68 | 22.25 | 40 | 8.0 |
| T11-43 | 43 | 83 | 84 | 69.85 | 22.25 | 40 | 8.0 |
| T11-45 | 45 | 83 | 84 | 69.85 | 22.25 | 40 | 8.0 |
| T11-48 | 48 | 89 | 97 | 79.38 | 28.58 | 43 | 9.5 |
| T11-50 | 50 | 89 | 97 | 79.38 | 28.58 | 43 | 9.5 |
| T11-53 | 53 | 103 | 100 | 82.55 | 28.58 | 53 | 9.5 |
| T11-55 | 55 | 107 | 103 | 85.73 | 28.58 | 53 | 9.5 |
| T11-58 | 58 | 110 | 106 | 88.90 | 28.58 | 53 | 9.5 |
| T11-60 | 60 | 110 | 106 | 88.90 | 28.58 | 53 | 9.5 |
| T11-63 | 63 | 113 | 110 | 92.08 | 28.58 | 53 | 9.5 |
| T11-65 | 65 | 116 | 113 | 95.25 | 28.58 | 53 | 9.5 |
| T11-68 | 68 | 118 | 116 | 98.43 | 28.58 | 53 | 9.5 |
| T11-70 | 70 | 118 | 116 | 98.43 | 28.58 | 53 | 9.5 |
| T11-75 | 75 | 126 | 121 | 103.19 | 28.58 | 53 | 9.5 |
| T11-80 | 80 | 150 | 132 | 114.30 | 28.58 | 73 | 9.5 |
| T11-85 | 85 | 156 | 138 | 120.65 | 28.58 | 73 | 9.5 |
| T11-90 | 90 | 163 | 144 | 127.00 | 28.58 | 73 | 9.5 |
| T11-95 | 95 | 163 | 144 | 127.00 | 28.58 | 73 | 9.5 |
| T11-100 | 100 | 169 | 151 | 133.35 | 28.58 | 73 | 9.5 |
If you have any question, please don't hesitate to contact me.