Intermodal Dry Cargo CNTR/CSC Reinspection Certifier Practice Test 2026 – The All-in-One Guide to Exam Success!

The primary purpose of a door seal gasket on intermodal containers is to provide a waterproof seal between the doors and the door frame. This sealing function is crucial for protecting the cargo inside the container from water damage, dust, dirt, and other environmental elements during transport. The gasket ensures that the container is airtight and watertight when closed, maintaining the integrity and safety of the contents, especially when transporting perishable or sensitive goods.

While some might think that insulation against temperature changes is important, the main function of the door seal gasket does not focus on thermal management. Similarly, while having an aesthetically pleasing appearance is important for many consumer-facing products, the door seal gasket's utility is not related to aesthetics. Lastly, while enhancing the locking mechanism may seem relevant, the gasket primarily serves as a seal rather than a functional improvement to the lock itself. Thus, the door seal gasket's role in providing a waterproof barrier is unequivocally its most critical purpose.