4310055 SEAL OIL For HITACHI ZX200-5G

The sealing lip design is unique, with its lip end shaped like a wedge, which presses against the surface of the shaft to achieve the sealing fluid function. Even under mechanical vibration and fluctuations in sealing fluid pressure, the sealing lip, as a flexible elastic body, can maintain a stable sealing effect and maintain the stable contact state between the lip and the shaft surface.Some oil seals, such as self-aligning pressure oil (SAPO) seals, can prevent external environmental pollution by using pressurized oil (minimum of 0.5 Bar/50 kPa) between two oil seals when the shaft bearing housing has radial, vertical, and horizontal misalignments. This can maintain a clean lubricant in the bearing housing and ensure a good sealing effect.

There are three types of shaft seals: skeleton oil seal, mechanical seal and packing seal. Different types of oil seal structures are suitable for different equipment and working scenes. For example, the skeleton oil seal has a metal skeleton structure inside, which can keep the matching force when it is installed in the cavity hole; Mechanical seal is sealed by the joint of moving ring and static ring, which is often used in equipment with high sealing requirements. Packing seal is a kind of structure type that uses packing to fill the sealing cavity to realize sealing.