Axle hub seals, often referred to as axle seals or differential seals, are located at the junction of the axle housing and the axle shaft. Their primary purpose is to keep the lubricating oil inside the axle housing while preventing dirt, moisture, and other debris from entering. Made from durable materials like rubber or polymer, these seals are engineered to withstand high temperatures, pressure, and the harsh conditions typically encountered in automotive environments.

The mention of 55%, 80%, and 10% in relation to oil seals might reflect various metrics or considerations concerning their performance and application. For example, in many mechanical systems, seals can be categorized based on their efficiency, effectiveness in preventing leakage, and their material composition. A 55% rating might refer to a baseline performance measure for standard oil seals, whereas an 80% rating could indicate high-performance seals designed for rigorous applications. On the other hand, a 10% figure could relate to the failure rate or the operating conditions under which these seals can be compromised.