Official Answer
Answer
Unlike stamped rings with holes for circlip pliers, spiral retaining rings often feature a small notch at one end. This notch allows a standard screwdriver or a dental-style pick to be inserted under the ring's end to pry it out of the groove. In subsea or heavy machinery applications, this is a major advantage as it requires no specialized tools. The notch design must be carefully placed so as not to create a significant stress concentration point. For heavy-duty rings, a 'V-notch' or 'Slotted-end' is often standard. Engineers must ensure the notch is accessible in the assembly, meaning the housing or shaft design should not shroud the ring's ends entirely.
