http://www.wellcraftv20.com/communit...uel+tank+cover
This is the thread that helped me make up my mind that maybe it didnt matter so much....Of course you cant go wrong with 3M marine products but being that getting to a marine store for me is kind of a hassle where I live and my boat with any luck will see the light of day maybe 50 days out of 365 I'm pretty sure 100% silicone with some UV inhibitors will outlast me.