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Piston and Rider Rings

A range of piston rings, rider rings and rider bands fulfill the varied sealing and piston support requirements for the vast majority of reciprocating compressors, using a range of CPI Special Polymer Alloys, standard and special materials. Many successful field applications, using the unique range of CPI materials, have transformed both oil-free and lubricated compressor reliability, resulting in better sealing, less wear and longer running life. Piston rings, rider rings and bands are manufactured in various designs ranging from conventional one-piece or segmental straight; angle or step cut design to the more complex configurations such as the unique Twin Ring™ design. CPI also custom designs rings and has developed specific combinations for particularly problematic and demanding applications. This has also included numerous successful conversions from lubricated to non-lubricated operation.Pressure balanced rings are available, when deemed appropriate for high pressure applications and piston/rider ring combinations are also available for more specific applications. Large diameter piston rings up to 47” (1200mm) are also custom manufactured for special requirements. A range of metallic piston and rider rings are also manufactured, using selected grades of bronze or cast iron, where operational requirements dictate.

Design
CPI’s capabilities in design innovation are firmly established and we are recognized as an industry leader in compressor sealing components technology. CPI design engineers are proactive in the design and development of new and specific solutions for compressors and their components. CPI designs solutions and components, selected to perform at the optimum levels of efficiency. We have the ability to analyse the performance of a compressor from valves through to pistons, with extensive and sophisticated computer designed solutions, 3D modeling, full FEA stress analysis capability and valve dynamics programs.
 
Quality Manufacturing
CPI’s commitment to the manufacture of quality components is vitally important. Each facility adheres to meticulous and stringent procedures to maintain quality assurance to ISO 9001 standards. The CPI manufacturing process benefits from total control and traceability of materials, within-house blending and moulding facilities through to the manufacturing and distribution of our precision engineered and quality components. All CPI’s manufacturing facilities are equipped with cutting edge production technologies of precision, automated and CNC machinery, operated by a highly skilled, experienced and dedicated work force.
 
Premium Quality Rings for the Entire Spectrum of operating Conditions
Application-engineered piston and rider rings are available, specifically designed to meet your operating parameters.On-site blending and compression or injection molding enables CPI to maintain total control throughout the manufacturing process. The CPI comprehensive range of piston rings, rider rings and rider bands meet the varied sealing and piston support requirements for the vast majority of reciprocating compressors, using a range of CPI Special Polymer Alloys™, standard and special materials.  Piston rings, rider rings and bands are manufactured in various designs ranging from conventional one-piece or segmental straight; angle or step cut design to the more complex configurations such as the unique Twin Ring™ design. CPI also custom designs rings and has developed specific combinations for particularly problematic and demanding applications. This has also included numerous conversions from lube to non-lube operation. Many successful field applications, using the unique range of CPI materials, have transformed both oil-free and lubricated compressor reliability, resulting in better sealing, less wear and longer running life.