
Circlips
Circlips (also known as retaining rings or snap rings) are semi-flexible fasteners designed to fix elements onto a shaft or in a bore/dwelling when assembled in a groove. They snap into position, typically within a groove to prevent them from moving.
After installation, the visible segment serves as a retaining shoulder for the designated component or assembly. Carbon spring steel is commonly used for the majority of circlip and retaining ring manufacture.
Circlips fabricated from this material undergo an austempering process to ensure they achieve the high level of ductility and hardness required to function correctly. Alternative materials are also available on request.

Circlips are often used in assemblies subjected to strong centrifugal forces, and applications with high rotational speeds. Circlips solve common engineering problems such as clearance diameter, flexible and radial installation, tolerance take-up and thrust load capacity.
- Axially installed into machined grooves in housings/bores (internal) or on shafts (external)
- Have lug holes for ease of installation/removal
- Make uniform contact when released in a groove
- Can accommodate higher thrust loadings
M Seals stocks a wide range of retainers in a variety of designs and materials including standard phosphate spring steel clips, stainless steel and phosphor bronze. Special designs/coatings are also available.
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