[Fot] Copper vs steel figure 8 gaskets

[Gasket Works USA]

I have made these sealing rings in various thickness.  If you look at the surfaces that you need to seal. i.e. the flat in the block and the flat on the sleeve -you can see that they are flat and smooth.  I can't see why copper is inherently better at sealing than steel.  What I can say is that there will likely be less galvanic effects and material such as brass or copper will work  just fine. Even if the the copper were annealed dead soft -I can't believe that the copper would compress and flatten out more than an imperceptable amount.  

I once saved a cylinder sleave by machining .132" off the top and building a series of individual coppper rings to bring the sleave to propper height.  There was still more than enough capture in the block.

   

M 

M.N.Dunst
Gasket Works USA, LLC
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