How to tell if your strapping is AAR approved
The rail road AAR requires approved strap to be marked every 5 feet.
Look for: on steel strapping painting (AAR33, AAR58) or, embossing (AAR11).
on poly strapping printing (AAR57, AAR82)
on cord strapping ink jet printing (AAR-77, AAR78, AAR80, CW-105).