(please see my profile pic abpve for the item I am looking for)

I have a Pro Sport 17' runabout boat... in the side of my boat is an
oval gasket that u insert a pole into on each end than you put the
pole in the holder and use the bungee cord to secure them. At each
end is a gasket and it holds the poles in place in the side of the
boat.
I need to replace the GASKET on each end, do u know where I can find
these? They must be oval and white in color? I am having a hard time
locating these.
I also can send a pic via email if anyone cares to help me identify
these properly. Maybe I am calling them the wrong name not sure, any
help will be great thanks in advance. I did add a pic in my profile
of the gasket I am looking for.
V. Lyn