Piston ring manufacturer Precision Products has won provisional approval from MAN Diesel & Turbo for adoption of its new CM2 (ceramic metal) piston ring coating technology.
The products was tested over a year onboard of container vessels with MAN B&W engines.
According t[ds_preview]o Precision Products the new coating process combines a reformulated material mix with the latest application technology. This should result in greater hardness, improved temperature performance and enhanced durability. Together with its supply chain partners, Precision Products is the first international piston ring manufacturer to receive provisional approval from MAN Diesel & Turbo for CM2 technology.
The engine-builder’s provisional approval envisages further shipboard tests, paving the way for the widespread adoption of CM2 piston ring technology for a range two-stroke marine engine applications.
Moves to increase piston ring time between overhauls (TBO) are a welcome development. Opening up large marine diesel engines can be time-consuming, expensive and disruptive to future engine performance the manufacturer stated.
Close links with designers and manufacturers
Precision Products is a specialist firm of piston rings and metallic sealing ring manufacturers based in Chesterfield, UK. The company has broad experience in the global supply of new and replacement specialist products in the marine sector. It works closely with engine designers, builders and licensees in the medium- and large-bore range. In recent years, the firm has followed a diversification strategy. That has resulted in close links with the designers and manufacturers of other engineering plant requiring advanced metallic seals solutions. These include the wind turbine sector, gas turbine sealing and a range of compressors, valve and reciprocating pump applications.
