kaitserõngad
Kaitserõngad, also known as retaining rings or circlips, are a type of fastener, generally made of metal, used to prevent movement of an assembly along a shaft. They are typically used in conjunction with a groove machined into the shaft or housing. There are two main types of kaitserõngad: internal and external. Internal kaitserõngad are installed inside a bore or housing and expand outward to engage a groove. External kaitserõngad are fitted onto a shaft and contract inward to engage a groove.
The function of a kaitserõngas is to provide a shoulder against which a component, such as a