Retaining rings, also known as retaining rings, are divided into retaining rings for holes and retaining rings for shafts. They play an axial limit role and can prevent other parts from axial movement. The forming process mostly uses plate punching, and the functional cross-section is conical. After assembly, most of them are "linear contact". Some large-size models are made by wire winding and punching excess materials. The cross-section is a regular rectangle, and after assembly, it is "surface contact".
