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Um, the subject was possible corrosion between tanks and bands, which I 
have never heard of nor do I expect to with stainless bands on doubles. PS

On Tue, 12 Sep 1995, Nick Simicich wrote:
> On Tue, 12 Sep 1995, Paul W. Smith wrote:
> > People have been using all kinds of tanks and tank bands for decades, 
> > have never heard of corrosion problems. The tanks are galvanized or 
> > painted and the bands are galvanized or stainless. 
> > I cannot speak for the 'tube man' but the likeliest reason to put the 
> > rubber under the bands is to protect the paint job (obviously not for
> > cave divers :)) 
> 
> Um, galvanic corrosion in scuba tanks is a real problem.  I've seen more 
> than one valve galvanically attach itself to an AL80.  At least one 
> manufacturer recommends that the valve be removed and lubed every six 
> months with (Dow 777? - not O2 safe, anyway) and reinstalled to prevent 
> galvanic corrosion in worst case service.
> 
> Technical diving has different requirements, of course.
> 
> Nick Simicich - njs@sc*.em*.ne* - (last choice) njs@bc*.vn*.ib*.co*
> http://scifi.emi.net/njs.html -- Stop by and Light Up The World!
> 
> --
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