Piston ring types
Piston rings play a very important part in internal combustion engines. They must absorb the combustion pressure, cool the piston, keep the oil in the crankcase and provide a film of oil on the cylinder wall. Most modern 4-stroke engines are usually fitted with three piston rings per cylinder. The first ring holds back the combustion gases. The second ring helps to hold back combustion gases and also scrapes the oil downward. The third ring holds the oil where it needs to be.
| Compression rings | ||
|---|---|---|
| Type | Section | Description |
| C1 |  | Rectangular compression ring |
| C2 |  | Taper faced compression ring |
| C3 |  | Internally beveled compression ring |
| C4 |  | Internally stepped compression ring |
| C5 |  | Ridge dodger ring |
| C6 |  | Keystone compression ring |
| C7 |  | Half-keystone compression ring |
| C8 |  | Taper faced scraper ring |
| C9 |  | Barrel faced compression ring |
| CL |  | L-ring |
| Scraper rings | ||
|---|---|---|
| Type | Section | Description |
| S11 |  | Napier ring |
| S13 |  | Taper faced napier ring |
| Oil control rings | ||
|---|---|---|
| Type | Section | Description |
| O21 |  | Oil control ring |
| O23 |  | Double-beveled oil control ring |
| O25 |  | Double-beveled oil control ring |
| WO21 |  | Coil ring-loaded slotted oil control ring |
| WO23 |  | Coil ring-loaded beveled-edge oil control ring |
| WO25 |  | Coil ring-loaded beveled-edge oil control ring |
| 3XO |  | 3-piece oil control ring |
Download brochure
You will find everything about piston rings in our piston ring brochure. The brochure tells you more about the piston rings’ function and of course includes an extensive overview of all piston ring types, joint types, options and coatings.
Customized
In the case of highly specific applications, it may be that the piston ring required is not in stock. These piston rings can still be specially produced in any dimension and finish desired. There is a minimum lead time of 24 hours for these.
Custom piston rings required? Call: +31 (0)53 432 34 46