Retaining Ring A4

Retaining ring A4 is a specific modification of stainless fasteners. Thanks to the composition of the austenitic alloy, which includes chromium, nickel and molybdenum, the fastener has increased resistance to environmental effects.

Reacts without corrosion with acids, alkalis, chlorine-containing substances, and seawater.

The main purpose of a retaining ring is to protect parts mounted on a shaft (for example, bearings) from displacement or sliding. When installed correctly, the retainer does not lose its original shape throughout the service life, since the fastener is made of A4 spring-type steel.

Retaining rings are classified by various criteria:

• by installation location – directly on the shaft or in a mounting bore;
• by the shape of engagement with the recesses – spiral, eccentric, or concentric fastener;
• by cross-section – flat or round;
• by installation method – axial or radial.

A4 retaining rings are used mainly in conditions requiring high corrosion protection against saline or acid-alkaline environments: in mechanical engineering, shipbuilding, the oil and gas, medical, and food industries, as well as for household purposes.