Hebei Hankai seals and wipers
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

Moreover, the drum itself is typically manufactured from high-strength materials that can withstand extreme temperatures and wear, which is crucial for heavy-duty applications. The design also allows for better heat dissipation, reducing the possibility of brake fade during prolonged use—a common issue in traditional drum brake systems.
springer drum brake
