The Treatise of Sealing for Valve Stem Oil Seals

Based on the issue of burning engine oil because of leaking at valve stem,to adopt the valve stem oil seals. Through analyzing the structure parameter,material selection of valve stem oil seals and influence of motor work condition ,narrating the basic structure and sealing principle of valve stem oil seals,to decrease the consume of engine oil,raise economy,improve the emission by using valve stem oil seals.