The retaining ring is a kind of axial movement installed on the grooved shaft and used as a fixed part. The inner diameter of this kind of retaining ring is slightly smaller than the diameter of the assembly shaft. When installing, it is necessary to use circlip pliers, insert the pliers nose into the pliers hole of the retaining ring, expand the retaining ring, and then put it on the pre-machined shaft groove. Retaining ring for holes, E-shaped retaining ring, C-shaped retaining ring, external locking clamping retaining ring, retaining ring for reverse hole, retaining ring for reverse shaft. Matters needing attention in the production of retaining ring packaging: The conventional packaging of retaining ring is packaged in batches of oil paper or plastic, and the surface is generally blackened by phosphating, commonly known as a wild card. There are several aspects that need to be paid attention to in the production of retaining rings for shafts: first, the surface is smooth; second, the hardness and elasticity are qualified; third, there must be no corner burrs. At present, domestic manufacturers have high-quality hardware and have the mature technology of the retaining ring.