62 Impala- What do the bumpers on gas filler door look like?

I am not looking for the ones that go on the body but that go in the arm that attaches the door to the body. It looks like there is some kind of a bumper that goes there and keeps the door from opening too far and hitting the body. All I have to go by is 2 little lumps of gray petrified rubber. Maybe these are available?
 
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