What is a primary characteristic of self-locking rings?

Self-locking rings are designed to automatically secure themselves in place without the need for additional components or external force, which defines their primary characteristic. This automatic locking mechanism allows for easier assembly and maintenance, as they do not require constant monitoring or tightening after installation.

In contrast, options that suggest self-locking rings need extra components or are exclusive to high-pressure systems do not accurately reflect their functionality. Additionally, the claim that they are easier to install than standard rings does not specifically highlight the automating aspect of their locking behavior, which is the true essence of self-locking rings. Thus, the emphasis on their ability to lock independently underscores the convenience and reliability they offer in various applications.