This 1992 Chevrolet Corvette has the valvetrain of its LT1 engine repaired with a new seat of valve stem seals from Street & Performance - Vette Magazine ...

It’s a specialty valve stem that inserts from the outside and uses a rubber piece that is compressed to seal the valve to the wheel. We now carry one of these to replace a damaged valve stem ...

SKF has announced it has developed and patented a new valve stem seal for engine applications for heavy-duty vehicles. The seal improves the quality of emissions and enhances engine operation by ...

The loose tolerances allow the valve stem to move laterally in the guide, which quickly oblongs the rigid PC seal and allows excessive amounts of oil to enter the combustion chamber past the valve.

Valve stem seals are important to control consumption of lubricating oil for engines and to prevent an air pollution problem by unclean exhaust. It is required for valve stem seals to have stable ...