A
circlip (a
portmanteau of
circle and
clip), also known as a
C-Clip,
Seeger ring,
snap ring or
Jesus clip, is a type of
fastener or
retaining ring consisting of a semi-flexible metal ring with open ends which can be snapped into place, into a
machined groove on a dowel pin or other part to permit
rotation but to prevent lateral
movement. There are two basic types: internal and external, referring to whether they are fitted into a bore or over a shaft. Circlips are often used to secure pinned connections.