Anyone tried military grade anti vibration feet ?

I came across this listing on ebay where the item is a vibration isolation feet used for military purpose to isolate electronics in military vehicles. Here is a link:
http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=110988576178

Has anyone tried something like this ? As with many other products like Vibraplane, industrial products which are scientifically designed do go well with many of our audio applications. Looking for some experience here.