Three ring types with great precision

3 ring types


Modern piston rod stuffing boxes consist of three ring types, each of which has a crucial function.

  • The top scraper rings scrapes impurities off the piston rod.
  • Sealing rings creates a pressure-tight seal between the scavenging air space and the crank case.
  • Lamella scraper rings scrapes system oil off the piston rod and minimise oil waste.

HECO was the first company in the world to introduce lamella scraper rings with replaceable lamellas, a design which requires the utmost precision in manufacturing in order to obtain the desired geometry.

For more than 40 years, we have further developed our manufacturing technologies. We know what it takes to achieve effective engine operation. Therefore we always produce scraper and sealing rings and lamella scraper rings with great precision according to the designer’s drawings and specifications.

Our valuable experience with manufacturing of all ring types for stuffing boxes is one of the reasons why HECO piston rod stuffing boxes can keep system oil waste to a significantly low level. In doing so, we fulfil the growing demands of the market for well-functioning and economic piston rod stuffing boxes.