PPUK provides expert design, development and manufacture of piston rings and metallic seals to meet a vast range of industrial applications. We offer piston ring and metallic seal solutions across diverse industries, including diesel railway locomotives; compressors; reciprocating pumps; special high temperature valves; hydraulic sealing – including hydro-electric and nuclear power stations; variable pitch propellors; guide rings for roller bearings; gearboxes; aerospace; and turbine sealing. The smallest product we have manufactured to date has a diameter of 12mm, and the largest has a diameter of more than 2,000mm.