Here's what we use whenever treating burns:

http://www.galls.com/shop/viewProductDetail.jsp?item=BM706

But the above is so expensive that not every organisation has that. Private company I volunteer alows us to use that only in extreeme cases per their own internal protocol. I don't really care and whenever I get a chance I use it on the patients (especially kids). Also doctors in the Burn Center don't give me so much hard time for using that since it's easier to clean up than if I used a petro-jelly sheet.

Now something that we use a petro-jelly sheet for or rather its packaging... whenever we get a call to stabbin or gun shot wound we use packaging cleaned from jelly residue as a wound sealant to create an occlusive dressing.
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Matt
http://brunerdog.tripod.com/survival/index.html