What is NOT a characteristic of a dynamic joint in firestop systems?

In the context of firestop systems, dynamic joints are specifically designed to accommodate movement caused by thermal expansion, structural settling, or other factors. A key characteristic of a dynamic joint is its ability to allow movement while providing an effective barrier to fire and smoke.

The fire resistance rating is crucial for determining how long a firestop will perform under fire conditions, ensuring that it meets safety standards. Stability during movement is also an essential characteristic, as it ensures that the joint maintains its integrity and continues to perform effectively, even when subjected to the dynamic forces of movement.

Pressure resistance is generally associated with static conditions or joints that do not experience movement. The primary focus of dynamic joints revolves around their function to flex and maintain performance during motion, rather than holding up against pressure. Thus, the option regarding pressure resistance is the characteristic that does not fit within the definition or expected performance of a dynamic joint in firestop systems.