A Cap Fitting is a pipe component used to close the end of a pipe.It prevents flow from continuing and provides a secure seal at the pipe termination.Caps can be welded, threaded, or press-fit depending on the type of piping system.They are commonly used in water, oil, gas, and chemical pipelines.Cap fittings help protect the pipeline and allow for future expansion or maintenance.They are essential for safely terminating open pipe ends.