Explanation:

Snap ring/Circlips:

• Circlips are fastening devices used to provide shoulders for positioning or limiting the movement of parts in an assembly.
• Circlips are also called `Retaining rings.
• The rings are generally made of materials having good spring properties so that the fastener may be deformed elastically to a considerable degree and still spring back to its original shape.
• This permits the circlips to spring back into a groove or other recess in a part or they may be seated on a part in a deformed condition so that they grip the part by functional means.
• Circlips are manufactured from spring steel with high tensile and yield strength.

Types:

Internal circlips:

• This type of ring is assembled in holes, bores, or housing.

External circlip:

• These types of rings are installed on shafts, pins, studs, and similar parts.

Material:

• Because retaining rings depend for their function largely on their ability to be deformed elastically during assembly and disassembly, the materials must have good spring properties.
• Circlips are manufactured from spring steel with high tensile and yield strength.