Piston Rings and Riders

Hydrogen-Compatible Components

Hydrogen is expected to play a crucial role in many uses from transportation to power generation, and governments worldwide are investing in research and infrastructure for the hydrogen economy. However, its success hinges on a new generation of critical machinery and advanced components that can operate beyond historical limitations.

Cook Compression collaborates with OEMs and end users to develop compressor components that minimize leakage and materials that withstand the degradation and high wear rates caused by exposure to hydrogen gas.

Cook Compression is a worldwide leader in the design and production of precision-made piston ring seals and rider rings. We earned this reputation by working closely with compressor operators and OEMs, responding to their evolving needs with innovative products and materials.

Rider rings prevent the piston from contacting the cylinder wall, while piston rings reduce gas flow between the piston and cylinder.

Cook Compression optimizes rider ring geometry, features, dimensions and materials to reduce loads and provide maximum service life, even in the most demanding applications.

Cook piston rings are engineered to limit leakage with lasting reliability.

All piston ring and rider materials are tested and validated through engineering analyses and Cook’s in-house materials laboratory and test compressors. Materials include cast iron, bronze, specially engineered alloys and high-performance thermoplastics.

Cook Compression manufacturing techniques and state-of-the-art equipment allow consistent machining to precise tolerances. Carefully controlled manufacturing ensures that each ring maintains uniform contact with the cylinder for dependable sealing.

Stringent quality assurance gives you the confidence that Cook rings will perform reliably time after time.