High pressure valve stem seals
Improved fuel economy
SKF high-pressure valve stem seals enable high-pressure boosting to increase the power of downsized engines for greater fuel efficiency.
Because of legislation and customer needs, vehicle manufacturers are eagerly working to improve fuel economy and minimise emissions. Downsizing engines that utilise boosting technologies to maintain or even increase power and torque is one method of doing this. Thanks to its robust design – including an independent pressure lip –SKF high-pressure valve stem seals allow significantly lower blow-by gas leakage. The seal remains closed, keeping valve guide wear and emissions to a minimum. Furthermore, with the addition of an extra lip, pressure resistance of up to 16 bar is within reach. These seals can be used in both light- and heavy-vehicle applications.
Spring loaded main lip
Enables boosting of downsized engines
Additional “pressure” lip to provide consistent oil metering