B257
B257 pneumatic cushioning (bolstering) seals, with their special design, are single acting sealing components designed so as to serve as cushioning (bolstering) at the end of the piston ends at the pneumatic cylinders.
| BİSSAN NO | d (h10) | D (H11) | b1 | b2 | D1 (H11) | D2 (H11) | d1 (f8) | B (+-0,1) | B1 (+-0,2) |
| B257-012 | 12 | 18 | 5 | 4,1 | 13 | 15,5 | 8 | 4,8 | 6,8 |
| B257-012/01 | 12 | 20 | 8 | 6,2 | 13 | 17 | 8 | 7 | 9 |
| B257-014 | 14 | 22 | 8 | 6,2 | 15 | 19 | 10 | 7 | 9 |
| B257-016/01 | 16 | 22 | 5,5 | 4,5 | 17 | 19,5 | 12 | 5,2 | 7,2 |
| B257-016 | 16 | 24 | 8 | 6,2 | 17 | 21 | 12 | 7 | 9 |
| B257-020 | 20 | 28 | 8 | 6,2 | 21 | 24 | 16 | 7 | 9 |
| B257-024 | 24 | 32 | 8 | 6,2 | 25 | 28 | 20 | 7 | 9 |
| B257-025 | 25 | 33 | 8 | 6,2 | 26 | 29 | 21 | 7 | 9 |
| B257-028 | 28 | 36 | 7,8 | 6,2 | 29 | 32 | 24 | 7 | 9 |
| B257-030 | 30 | 40 | 8 | 6,2 | 31,5 | 35 | 26 | 7 | 9 |
| B257-032 | 32 | 40 | 8 | 6,2 | 33,5 | 37 | 28 | 7 | 9 |
| B257-036 | 36 | 46 | 8 | 6,2 | 37,5 | 41 | 32 | 7 | 9 |
| B257-040 | 40 | 50 | 8 | 6,2 | 41,5 | 45 | 32 | 7 | 9 |
| B257-050 | 50 | 60 | 8 | 6,2 | 51,5 | 55 | 46 | 7 | 9 |
