Rail Car Polyurea™ polyurea is an extremely tough abrasion resistant super-polymer designed to protect the interior of steel or aluminium rail cars which are used to haul harsh aggregates such as coal, rock, salt, land-fill materials, etc. This 1A:1B material provides superior tear and impact strength while delivering a high degree of corrosion resistance. Rail Car Polyurea is a non-breathable polyurea which eliminates water vapor transmission to underlying surfaces to prevent the underlying metals from oxidizing. Rail Car Polyurea may also be used in many other industrial and harsh environments.