Street Address: Zhenxing West Road, Economic Development Area, Yuyao City
City: Ningbo
Province: Zhejiang
Country/Region: China
The valve stem oil seal is assembled on the duct of the exhaustvalve to prevent overfull lubricating oil from entering the cylin-der and combuster.It can reduce amassment of carbon on thevalve to improve the performance of the engine and reduce the environmental pollution of waste gas and save oil