Official Answer
Answer
Spiral retaining rings are unique because they have no 'ears' or lugs like stamped circlips. For removal, a 'Removal Notch' is a small scallop on the end of the ring that allows a screwdriver or dental pick to get behind the material and pry it out of the groove. 'Offset Ends' are used where the ring needs to fit into a very tight radial space; one end of the spiral is slightly offset to facilitate the start of the winding process. In field maintenance for heavy equipment, removal notches are superior because they prevent damage to the groove walls during disassembly. Without a notch, technicians often resort to aggressive prying, which can score the precision-machined groove, leading to future stress risers and assembly failure.
