2. 80% - Durability The durability of an oil seal accounts for 80% of its importance. This aspect encompasses the seal's ability to resist wear and tear over time. Seals must be manufactured from materials that can withstand harsh operating environments, including exposure to extreme temperatures, chemicals, and mechanical stress. Regular maintenance can help prolong the life of oil seals, but ultimately, the initial selection of a high-quality seal can make a significant difference in durability. In many instances, investing in better materials upfront results in fewer replacements and repairs in the long run.