The Parker CPI / A-LOK Back Ferrule (BF) is a back ferrule for fractional tubes. It comes in 14 sizes from 1/16" to 2".
| Type | Back ferrule |
| Part Numbers | 1BF1 ~ 32BF32 |
| Material Note | For stainless steel, sizes 4 to 32 are Suparcase ferrules |
| Material Options | Ferrules are available in standard metal materials as well as standard plastics such as PTFE and nylon (contact us for availability by material) |
| Sizes (inches): tube O.D. by Part Number | 1BF1: tube 1/16" / 2BF2: tube 1/8" / 3BF3: tube 3/16" / 4BF4: tube 1/4" / 5BF5: tube 5/16" / 6BF6: tube 3/8" / 8BF8: tube 1/2" / 10BF10: tube 5/8" / 12BF12: tube 3/4" / 14BF14: tube 7/8" / 16BF16: tube 1" / 20BF20: tube 1-1/4" / 24BF24: tube 1-1/2" / 32BF32: tube 2" |