Hebei Hankai oil seal kit

The nomenclature 30x42x7 describes the oil seal's three critical dimensions the inner diameter (ID), outer diameter (OD), and width (W). Specifically, this oil seal features an inner diameter of 30 mm, an outer diameter of 42 mm, and a width of 7 mm. These measurements indicate that it is designed to fit into a specific space within a machine, preventing the leakage of fluids, particularly oil, from critical components like shafts and housings.

1. Disassemble the Cylinder Start by securely supporting the hoist and removing the hydraulic lines. Carefully disassemble the hydraulic cylinder, taking note of the order and orientation of the components.

Oil seals are typically made from materials like rubber, silicone, or polyurethane. Their design features a flexible lip that fits closely against a rotating shaft while forming a barrier to prevent oil or lubricant from leaking out. Additionally, they can prevent external contaminants such as dust, dirt, and moisture from entering sealed compartments. This functionality is crucial in extending the lifespan of machinery and preventing potential failures.