VSS 9X11.8X10 NEF Z
Valve stem seal

Valve stem seals provide a defined metering rate of oil to the valve stem interface of internal combustion engines to lubricate the valve guide and minimize engine emissions. SKF valve stem seals are available for diesel and gasoline engines with or without boosting. The flexible lip allows valve stem movement and static eccentricity. A garter spring provides constant radial force on the sealing lip.

• Long-term emissions control
• Long service life
• Optimum valve lubrication
• Minimum valve guide wear for maximum valve train life