something like take a string a wrap it all the way around the pulley, then divide that by pie.
tdc thanks for clearing up pie for me cause i never learned that in the 3rd grade lol jk
Not at all I have run the silicone gaskets for over 8 months. Replaced them more than 3 times. It is highly resistant to any kinds of fuel and oil and heat is nothing. The sealing is ten times as likley with the silicone because of the softness and compression of the material.