How Many Years Do Valve Stem Seals Last?Valve stem seals often last more than 150,000 miles under normal driving conditions. Infrequent oil and filter changes may cause valve stem seals to fail prematurely. Improper installation often causes valve stem seals to fail shortly after installation.If you want to purchase good quality valve oil seals, please contact NNK factory
TC oil seal is a type of oil seal often used in automotive and industrial applications. Their purpose is to prevent oil and other fluids from leaking from machines or equipment. The TC in TC oil seal stands for "Spring Lip" and refers to the way the seal is constructed.