Official Answer
Answer
The 'Spiral-In' method involves inserting one end of the ring into the groove and then winding the remainder of the ring in with a tool or by hand. For deep bores, this is often the only feasible method, as standard expansion pliers cannot reach the groove. While this method is highly reliable and prevents over-stressing the ring, it is generally slower than using a tapered sleeve and plunger. In high-volume assembly, a 'plunger and sleeve' setup is used where the ring is compressed as it travels down a tapered bore and then snaps into the groove upon reaching the target depth, significantly reducing cycle time.
