Retaining Rings & Circlips from MW IndustriesMW Industries, Inc. manufactures custom, precision-engineered retaining rings (also known as coil rings, coiled rings, snap rings, round wire rings, circlips, square section rings, rectangular section rings, custom shaped section rings, or tapered section rings) that are available in various end configurations and used in multiple applications.

Function of Retaining Rings (or Snap Rings)
Retaining rings are designed for use on shafts or in bores. The ring installs into a groove, thereby creating a shoulder to accurately position and retain other components of an assembly. The retaining shoulder is created when the ring attaches itself to the bore or shaft, typically by snapping into a groove.

Retaining Rings vs. Traditional Fasteners
The advantages of using retaining rings include their ease of assembly, low cost to manufacture, and accuracy of positioning when compared to traditional fasteners. Retaining rings only require a groove. This is an advantage over traditional fasteners that require threaded components, mating threaded holes, access holds, and counter-bores. Retaining rings function with a minimal amount of surface preparation to either the shaft or the housing.

Types of Retaining Rings

The two major categories of retaining rings are internal and external.

Internal Retaining Rings

Internal rings are assembled inside a cylinder where the ring fits inside a hole (or bore).

External Retaining Rings

External retaining rings are assembled on the outside (or external) of the shaft.

MWI Production Capabilities


  • Carbon Steel (SAE 1060-1090)
  • Chrome Silicon Alloy Steel
  • Phosphor Bronze
  • Stainless Steel


  • Phosphate Coating
  • Phosphate and Oil


  • Bulk Stacked
  • Plastic Shrink Wrapped
  • Rings on Wire


  • Brake Cylinders
  • Clutches
  • Computer Equipment
  • Couplings
  • Drive Shafts
  • Electric Motors
  • Furniture
  • Gear Retainers
  • Hand & Power Tools
  • Hydraulic Equipment
  • Home Appliances
  • Lawn Mowers
  • Piston Pin Rings
  • Pumps
  • Pressure Regulators
  • Seals
  • Solenoids
  • Sports Equipment
  • Torque Converters
  • Transmissions
  • Toys

Retaining Ring End Configurations

Retaining ring with reverse angle cut ends with a slight dub cut
Reverse angle cut ends with slight dub cut
Round wire retaining rings with angle cut ends
Round wire angle cut ends
Square wire snap ring with straight cut ends
Straight cut ends
Square wire retaining ring with custom formed ends
Custom formed ends
Rectangular wire retaining ring with straight cut ends and OD notches
Straight cut ends with OD notches
Rectangular wire circlip with rounded ends and ID notches
Rounded ends with ID notches
Rectangular wire retaining ring with angle cut ends
Angle cut ends
Custom retaining ring with shaped and formed ends with holes
Custom shaped & formed ends with holes
Custom snap ring with butterfly cut and straight cut ends
Butterfly cut & straight cut ends
Circlip with butterfly cuts on both ends
Butterfly cut both ends
Retaining ring with both ends dubb cut
Dubb cut both ends
Square wire retaining ring with a custom shape cut into both ends
Custom shape cut ends
Small - Large Retaining Ring Capabilities
For More Information on Retaining Rings:
Contact Us
Request A Quote

P: 847.349.5780
F: 847.349.5779 (orders and quotes)

> Retaining Ring Product Flyer


ISO 9001:2008
ISO/TS 16949:2009
ITAR Compliant