Most current types
| C1 | Rectangular Ring | |
| C2 | Taper faced Ring | |
| S11 | Napier ring | |
| C6 | Keystone ring | |
| C7 | Half keystone ring | |
| O21 | Slotted oil control ring | |
| O23 | Double bevelled oil control ring | |
| O25 | Bevelled oil control ring | |
| WO21 | Coil spring loaded bevelled-edge oil controle ring | |
| WO23 | Coil spring loaded slotted oil control ring | |
| WO25 | Coil spring loaded double bevelled oil control ring |










