Hebei Hankai 20x30x7 oil seal
In addition to protecting against external contaminants, dust wiper seals also help retain lubrication within the system. By preventing dust and dirt from entering the system, these seals help reduce friction between moving parts, which can prolong the life of the equipment and reduce maintenance costs. Proper lubrication is essential for the smooth operation of hydraulic cylinders, pneumatic systems, and other machinery, and dust wiper seals play a vital role in ensuring that lubricants stay where they are needed most.
dust wiper seal



Brake drums are crucial components in certain vehicle braking systems, particularly in older vehicles, heavy-duty trucks, and some industrial machinery. The brake drum works together with brake shoes to create the friction necessary to slow down or stop the vehicle. Over time, due to wear and tear, the thickness of the brake drum can decrease, which raises serious concerns about safety and performance. Therefore, understanding the minimum brake drum thickness is essential for all vehicle owners and operators.