Valve Stem Seals

Valve seals are designed to purposefully leak oil in small amounts into the combustion chamber, enough to provide the necessary lubrication but not so much as to cause problems with excessive oil combustion and carbon buildup.
A&S Seals Co., Ltd. is a global supplier of Valve Stem Seals, YEI Seals, A&S Seals and many more. focusing on the various brands of seals supply