In what situation are swaged fittings typically used?

Swaged fittings are specifically designed for permanent connections in fluid lines, sealing the joint by deforming the fitting to securely hold it onto the tubing or hose. This type of fitting does not lend itself to frequent disconnections because the swaging process creates a strong, immovable bond that is intended for long-term use.

Using swaged fittings makes sense in applications where routine disconnections are not necessary, as they provide an effective solution that minimizes the potential for leaks and ensures the integrity of the connection under pressure. In contrast to swaged fittings, other types of fittings are designed for ease of disconnection and reconnection, making them more suitable for situations where frequent adjustments or changes to the system are required.

This context reinforces the appropriateness of option B as the correct choice.