Compression Ring

Hook Ring

Designed for applications that require passing counterbores and retaining ring grooves.

Step Ring

Restricts oil flow by eliminating the straight path.

Inside cut

Inside surface is cut to allow the ring to be inclined during operation. So that the ring working surface lower edge line contact with the cylinder wall to assist initial running-in.

Under Cut

The lower edge of the working surface is cut. While being a pressure ring, it also performs as an oil control ring.

Copper plated

Increases initial running-in of new rings with the cylinder wall.

Notch

Enhances the close fit between piston ring and cylinder wall.

Both –side keystone

The cross section is wedge-shaped from both sides. Excellent in preventing ring sticking.

Slip In

Increases lubrication of oil between the ring and cylinder liner.

Copper plated

Increases initial running-in of new rings with the cylinder wall.