Reflective Not-In-Service cap covers quickly let firefighters know the hydrant is not in service. They work during inclement weather, low light and darkness.
To insure proper installation and "fit" between the Not-In-Service cover and the hydrant cap a weather resistant/waterproof foam strip is permanently installed on the inside circumference of the ocver under the reflective sheeting.
In addition, each cover comes with a wire retainer ring to aid in securing the cover to the cap. The retainer ring may also be used to accommodate a cap chain, if desired.