Hebei Hankai hub bearing seal

2. Contamination Protection Hydraulic systems operate in varying environments where dust, dirt, and other contaminants can infiltrate and damage internal components. Shaft seals act as barriers, ensuring that harmful particles do not enter the system, which can lead to premature wear and failure.

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.

Key Differences Between Dust Seals and Oil Seals

At its core, a cylinder gland seal is designed to ensure that the hydraulic or pneumatic fluid remains contained within the cylinder, preventing leakage that can lead to loss of pressure and efficiency. The seal is typically mounted in a gland, which is part of the cylinder housing. As the piston moves within the cylinder, the gland seal interfaces with its surface, creating a barrier that minimizes fluid escape.