Hello there...this is my first posting...new at this..you might want to contact the preparatora at the ROM in Toronto.  They were using plasti dip for mount covering (along with other things) when I was there, and they said it was approved by the conservation department.  See what
they are saying now.
Mike Oates, Ottawa

Tim J. Mcshane wrote:

> I have a question for the conservators and exhibits people out there.  I
> have a plate of window glass from a supersonic aircraft, so its fairly
> large (about 2.5 feet by 1.5 feet) and fairly heavy (due to the thickness
> of the glass).  I want to build a mount to properly display it.  Because
> of the weight I need to support, I ruled out the possibility of acrylic
> rod; my plan now is to construct a steel wire stand and coat it with a
> commercial prepartation called Plasi Dip (it's marketed primarily as a
> coating for tool handles).  This stuff will seal the steel so it won't
> leave rust marks on the artifact should it get wet, it will cushion the
> weight of the glass on the steel, and prevent the steel from scratching
> the glass.  My concern is that there might be harmful chemicals in the
> Plasi Dip.  It contains Naptha, Hexane, Toluene and Methyl Ethyl Ketone.
> I don't know if this will affect the glass at all, but the window has a
> rubber gasket around it and an electrically-insulated attachment for an
> defrosting mechanism.  Also, I wanted to use this type of mount to
> display other pieces, including original paper reports.  Is this stuff
> going to be OK to use, should I left it off-gas a while (how long?), can I
> use it for short periods of time (we've got an open house and a special
> tour coming through soon), or should I never let this stuff near an
> artifact?
>
> Any comments?
>
> ______________________________
> Tim McShane, Director
> A. V. Roe Canada Heritage Museum
>
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