mate if you silkaflex them on you will never get them back off! all you need is high modulus silicone sealant
i found the best way is to put a blob between bolt holes, put dish on, torque up say 8 of them, put a bead round the inside then do the rest up. i have read to do them up dry and then seal but they have leaked when i tried that method (twice lol)
most importantly, make sure the surfaces are spotless. use a bit of wet and dry