MAHLE piston rings

In modern engines, and for high continuous outputs, our piston rings ensure reliable and precise function of the carriers.

As the leading manufacturer of pistons, we constantly work to optimize the performance and running quality of our piston rings. We also set quality standards in this field with state-of-the-art production facilities.






With decades of experience in development and production, we can assure optimum compatibility between our pistons and piston rings and can satisfy the highest demands.

Piston rings have three important functions in modern engines:

• They seal the combustion chamber from the crankcase.
• They limit and regulate the oil consumption.
• They dissipate the heat that is taken up by the pistons during combustion to the cooled cylinder bore.

In order to satisfy these demands, the piston rings must fit tightly against the cylinder wall over their entire circumference, even if the cylinder deviates slightly from its ideal form. Due to the high inertial forces and combustion pressures as well as the high wear producing loads, the piston rings have to satisfy high demands in respect to piston ring material (strength/temperature stability) as well as surface finish and shape.