O-Ring Face Seal (SAE J1453)
This connection forms an impressive leak resistance and can be used in applications up to 6000 psi. The male half of the connection has a straight thread. The female half has a machined flat surface with a straight thread. A seal takes place when the O-ring is squeezed onto the female flat surface seat. The swivel nut on the female half holds the connection together.
| Inch size | Dash size | Thread Size | Male Thread O.D. | (in) | Female thread O.D | (in) |
|---|---|---|---|---|---|---|
| 1/4 | -4 | 9/16 - 18 | 9/16 | 0.56 | 17/32 | 0.51 |
| 3/8 | -6 | 11/16 - 16 | 11/16 | 0.69 | 5/8 | 0.63 |
| 1/2 | -8 | 13/16 - 16 | 13/16 | 0.82 | 3/4 | 0.75 |
| 5/8 | -10 | 1 - 14 | 1 | 1.00 | 15/16 | 0.93 |
| 3/4 | -12 | 1 3/16 - 12 | 1 3/16 | 1.19 | 1 1/8 | 1.11 |
| 1 | -16 | 1 7/16 - 12 | 1 7/16 | 1.44 | 1 3/4 | 1.36 |
| 1 1/4 | -20 | 1 11/16 - 12 | 1 11/16 | 1.69 | 1 5/8 | 1.61 |
| 1 1/2 | -24 | 2 - 12 | 2 | 2.00 | 1 15/16 | 1.92 |