| Approx. bore mm | 5 |
| Description | 'O' ring to fit RM:RF13 |
| Joint size | 13 |
| Max O.D. shank mm | 8 |
| Spherical diameter mm | 13 |
| Pack quantity | 1 |
These PTFE 'O' rings fit onto the end of the glass male ball joint to provide a seal with the inner surface of the female cup joint.