Specifications
- Cross Section Configuration
There are many Cross Section Configurations in Piston Rings. depending on the application. some of the common Cross Section Configuration are as under
| Type | Cross Section |
| Rectangular ring |  |
| Keystone ring |  |
| Half keystone ring |  |
| Scraper ring (Stepped) |  |
| Napier ring (Undercut stepped) |  |
| Slotted oil-control ring |  |
| Double-bevelled-edge-oil-control ring |  |
| Bevelled-edge oil-control ring |  |
| Coil spring loaded slotted oil-control ring |  |
| Coil spring loaded double-bevelled-edge-oil-control ring |  |
| Coil spring loaded bevelled-edge-oil-control ring |  |
| Steel oil-control ring with V-groove |  |
| Expander / segment oil-controll ring |  |
- Peripheral Surface Configuration
Some of the commonly used on Peripheral Surface Configuration are as under.
| Configuration | Cross Section |
| Peripheral surface straight faced |  |
| Peripheral surface barrel faced |  |
| Peripheral surface asymmetrical barrel faced |  |
| Peripheral surface taper faced |  |
| Peripheral surface taper faced partially cylindrical machined or lapped |  |
| Edge configuration some of the commonly used Edge Configuration are as under | |
| Configuration | Cross Section |
| Peripheral surface straight faced | |
| Peripheral surface barrel faced | |
| Peripheral surface asymmetrical barrel faced | |
| Peripheral surface taper faced | |
| Peripheral surface taper faced partially cylindrical machined or lapped | |
- Surface Layer Configuration
The more common Coated, Plated, Nitrided Configurations are as under.
| Configuration | Cross Section |
| Peripheral surface plain, i.e., uncoated, unplated and not nitrided |  |
| Peripheral surface coated or plated “fully-faced configuration” |  |
| Peripheral surface coated or plated “semi-inlaid configuration” |  |
| Peripheral surface coated or plated :inlaid configuration | |
| Piston ring nitrided on all surface |  |
| Piston ring nitrided on specific surfaces only (e.g., “peripheral surface only”) |  |
