Hebei Hankai 14x22x5 oil seal

Conversely, an oil seal, also referred to as a fluid seal or grease seal, is primarily designed to retain lubricants such as oil or grease within a specific area. Oil seals are crucial in preventing the leakage of lubricants from machinery, thereby ensuring optimal lubrication and efficient operation. They are also essential in preventing contaminants from entering these lubricated compartments.

Wheel bearing grease seals, often referred to simply as grease seals, are fitted between the stationary and rotating parts of a wheel bearing assembly. They create a barrier that prevents grease from leaking out while simultaneously keeping dirt, dust, moisture, and other contaminants at bay. Typically made from durable materials such as rubber or synthetic compounds, these seals are engineered to withstand high temperatures and pressures, which can occur during operation.