Door gaskets and rubber seals

Rubber gaskets are fitted to the container doors during the manufacturing process and prevent water ingress.
Door gaskets are designed to present two or more fins against the structure or adjacent door.
These are generally flexible but when the gasket is damaged, they may become hard or blocked thus jamming the door closed, or preventing it being closed.)
You might think that all shipping container doors were equal but according to these amounts of different rubber gaskets, I don’t think so, take a look