Hebei Hankai 20 30 7 oil seal


One common type of oil seal is the lip seal, which features a flexible lip that makes contact with the rotating shaft to create a tight seal. Lip seals are often used in automotive engines, gearboxes, and industrial pumps due to their effectiveness in preventing oil leaks. Another popular option is the mechanical seal, which uses a rotating element to maintain constant contact with the shaft, ensuring a reliable seal even at high speeds and pressures.
20 30 7 oil seal



One of the most significant advantages of self-energizing drum brakes is their efficiency. The self-energizing feature means that less force is required from the driver to achieve effective braking. This not only improves the responsiveness of the braking system but also reduces wear on the brake components, leading to longer service life. Moreover, since these brakes can provide strong stopping power with less hydraulic pressure, they can help improve fuel efficiency in some applications.
self energizing drum brakes
