Deciding between these four:

http://store.summitracing.com/egnsea...115+4294844342

What are the pro's/con's of silicone over rubber? Silicone is cheaper AND is listed for performance applications. Only thing I wonder is if the silicone ends up being less "supple" than the rubber, becoming more prone to leaks. Maybe the silicone can just withstand more crank pressure?

 

i got rubber it leaks.......if i did it again i would go with silicone....just becase i had rubber leak on me.........but thats not to say i know which one is better....all i know is which one i replaced and which one still leaks...lol

 

All I know is that silicone stays supple for a lot longer than rubber.