For certain applications with eyelets such as airline trolleys, data or valve cabinets the padlock seal benefits from hanging flat against the door or inside the cupped recess in the example of an airline trolley.

Ideally a padlock seal can be closed using one hand and if not properly locked or tampered will spring open, thereby attracting attention to its status.

Checking the integrity of a padlock seal can be achieved by giving it a quick tug, if the seal has been tampered it will no longer have its original strength and will open easily.