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The durometer of an oil seal is typically dependent on the material it is made with. Common oil seal materials along with their durometers are as follows:

In conclusion, the spark plug wholesale market and manufacturing industry in China offer a wide range of options for distributors, retailers, and automotive service providers. Understanding the importance of spark plugs and wires, as well as the emphasis on manufacturing quality and environmental compliance, can guide informed decision-making for businesses and organizations seeking reliable spark plug solutions.