Specifications
| MODEL NUMBER | BELLOWS ID | WALL THICKNESS | FREE LENGTH | SPRING RATE | COMPRESSED LENGTH |
| FC-KF-10-1 | 3/8 | 0.006 | 3.20 | 35 | 3.0 |
| FC-KF-10-2 | 3/8 | 0.006 | 4.20 | 28 | 3.8 |
| FC-KF-10-3 | 3/8 | 0.006 | 5.20 | 22 | 4.6 |
| FC-KF-16-1 | 1/2 | 0.006 | 3.20 | 61 | 3.0 |
| FC-KF-16-2 | 1/2 | 0.006 | 4.20 | 49 | 3.8 |
| FC-KF-16-3 | 1/2 | 0.006 | 5.20 | 38 | 4.6 |
| FC-KF-25-1 | 3/4 | 0.006 | 3.20 | 45 | 3.0 |
| FC-KF-25-2 | 3/4 | 0.006 | 4.20 | 36 | 3.8 |
| FC-KF-25-3 | 3/4 | 0.006 | 5.20 | 28 | 4.6 |
| FC-KF-40-1 | 1 1/2 | 0.006 | 3.20 | 85 | 3.0 |
| FC-KF-40-2 | 1 1/2 | 0.006 | 4.20 | 69 | 3.8 |
| FC-KF-40-3 | 1 1/2 | 0.006 | 5.20 | 53 | 4.6 |
| FC-KF-50-1 | 1 3/4 | 0.006 | 3.20 | 62 | 3.0 |
| FC-KF-50-2 | 1 3/4 | 0.006 | 4.20 | 50 | 3.8 |
| FC-KF-50-3 | 1 3/4 | 0.006 | 5.20 | 38 | 4.6 |
