Aluminum boat question

[JAC]

Does anyone know the name of the black stuff they put on sharp edges in aluminum boats. Also does anyone know where I could by some? In the pic below you can see this black plastic on the sharp edge of the shelf I want to buy a few feet to put on my door.

 

[Gypseas]

https://www.google.ca/search?q=rubb...1BsLFigLb44HQAQ&ved=0CEEQsAQ&biw=1599&bih=789

automotive shops should have it

cheers