High performance, marine engine seals specialist Precision Polymer Engineering (PPE), a unit of IDEX Corp., announces Perlast G75TX, a new generation of perfluoroelastomer seal that extends the life of pre-heat chamber and exhaust valve seat seals as engines burn hotter to meet lower emissions standards.

　　Engine manufacturers and operators are under pressure to reduce SOx, NOx and particulate emissions whilst achieving higher efficiencies, improved fuel economy, and extended maintenance intervals. Perfluoroelastomers are commonly used in the hottest parts of the engine for pre-heat chamber and exhaust valve seat seals. However until now they have suffered from a poor compression set, typically 20%, reducing the seal’s operational life. Perlast G75TX is the first perfluoroelastomer to provide a compression set of 8%, while improving the elastomer’s characteristic high temperature and chemical resistance.